May 152013

After last weeks untimely pinch by Dion Phaneuf in game 4 that led to an overtime goal and the Bruins taking a 3-1 lead in the first round series there was a lot of evaluation of Phaneuf as a defenseman both good and bad. I was intending to write an article to discuss the relative merits of Dion Phaneuf and attempt to get an idea of where he stands among NHL defensemen but in the process of researching that I came across some interesting Phaneuf stats that I think deserve their own post so here it is.

My observation was with respect to Phaneuf’s usage and performance when the Leafs are leading and when they are trailing over the previous 3 seasons. Let’s start of by looking at Phaneuf’s situational statistics over the past 3 seasons.

5v5 5v5close 5v5tied Leading Trailing
G/60 0.222 0.175 0.101 0.156 0.408
Pts/60 0.700 0.670 0.660 0.420 1.020
IPP 30.1% 31.1% 34.2% 20.0% 34.5%
GF20 0.773 0.721 0.640 0.692 0.986
GA20 0.841 0.760 0.943 0.865 0.714
GF% 47.9% 48.7% 40.4% 44.4% 58.0%
CF20 18.316 18.113 18.159 15.195 21.542
CA20 20.686 21.418 21.880 22.982 17.223
CF% 47.0% 45.8% 45.4% 39.8% 55.6%
OZ% 28.0% 26.7% 25.2% 24.2% 34.5%
DZ% 31.8% 30.3% 29.7% 37.5% 28.5%
NZ% 40.3% 43.0% 45.0% 38.3% 37.0%
DZBias 103.9 103.6 104.4 113.3 94.0
TeamDZBias 108.9 109 107 115.2 100.8
DZBiasDiff -5 -5.4 -2.6 -1.9 -6.8

Most of the stats above the regular readers should be familiar with but if you are not you can reference my glossary here. The one stat that I have not used before is DZBias. DZBias is defined as 2*DZ% + NZ% and thus anything over 100 indicates the player has a bias towards starting shifts in the defensive zone and anything under 100 the player has a bias towards starting in the offensive zone. I prefer this to OZone% which is OZStarts/(OZStarts+DZStarts) because it takes into account neutral zone starts as well. TeamDZBias is the zone start bias of the Leafs over the past 3 seasons and DZBiasDiff is Phaneuf’s DZBias minus the teams DZBias and provides a zone start bias relative to the team. Anything less than 0 indicates usage is more in the offensive zone relative to his teammates.

So, what does this tell us about Phaneuf.  Well, there isn’t a huge variation in either the zone start usage or the results during 5v5, 5v5close and 5v5tied situations so the focus should be on the differences between 5v5leading and 5v5trailing which are significant.

Typical score effects are when leading a team gives up more shots but of lower quality (defensive shells protect the danger zone in front of the net but allow more shots from the perimeter) and takes fewer shots but of higher quality (probably a result of more odd-man rushes due to pinching defensemen of the trailing team).  Phaneuf seems to take this concept to the extreme but more importantly Phaneuf seems to excel best in an offensive role and struggles in a defensive role. When the Leafs are trailing Phaneuf has  0.408G/60 (10th of 180 defensemen) and 1.02 points/60 (36th of 180 defensemen) but when leading Phaneuf falls to 0.156 G/50 (64th of 177 defensemen) and 0.42 points/60 (137th of 177 defensemen). Furthermore, Phaneuf’s involvement in the offensive zone drops off significantly when leading (IPP drops from 34.5% when trailing to 20.0% when leading).

In terms of on-ice stats, Phaneuf’s CF% drops from 55.6% when trailing (79th of 180 defensemen) to a very poor 39.8% when leading (164th of 177 defensemen).  Some may be thinking this is due to zone starts but Phaneuf is getting above average offensive zone starts both when trailing (ranks 100th of 180 defensemen) and when leading (ranks 154th of 177) and using even the most aggressive zone start adjustments in no way will account for the difference. Similar observations can be made with on-ice goal stats as well. Let’s look at how Phaneuf ranks among defensemen over the past 3 seasons.

Leading (of177) Trailing ( of 180)
GF20 109 25
GA20 125 71
GF% 126 36
CF20 128 31
CA20 174 154
CF% 164 79

That is a pretty significant improvement in rankings when trailing over when leading, especially in the offensive statistics (GF20, CF20). If zone starts aren’t a factor, might line mates be? He are Phaneuf’s most frequent defense partners:

Trailing:  Gunnarsson (364:33, 31.0%), Beauchemin(212:07, 18,0%), Aulie(162:09, 13.8%)

Leading: Gunnarsson (376:16, 32.5%), Aulie(234:17, 20.3%), Beauchemin(166:30, 14.4%)

Playing more with Beauchemin and less with Aulie when trailing ought to help, particularly ones offensive stats, but I doubt that is going to account for that much of a difference. Also, when leading Phaneuf has a 41.2CF% with Gunnarsson and when trailing that spikes to 54.6%. When leading Phaneuf and Beauchemin have a CF% of 37.3% and when trailing that spikes to 57.7%. With Aulie the difference is 36.6% vs 49.3%. Regardless of which defense partner Phaneuf is with, their stats dramatically improve when playing in catch up situation than when in trailing situations.

The same is true for forwards. When protecting a lead Phaneuf plays more with Grabovski and Kulemin but when playing catch up he plays a bit more with Kessel and Bozak but for all of those forwards Phaneuf’s numbers with them are hugely better when playing catch up than when protecting a lead and playing with Grabovski and Kulemin more when playing with a lead should only help his statistics as they are generally considered the Leafs better corsi players.

Let’s take a look at a chart of Phaneuf’s corsi WOWY’s when leading and when trailing.



As you can see, when leading the majority of Phaneuf’s team mates are to the left of the diagonal line which means they have a better corsi% without Phaneuf than with.



When trailing the majority of Phaneuf’s team mates are near or to the right of the diagonal line which means they generally have better corsi% statistics when with Phaneuf than when apart.

So the question arises, why is this? It doesn’t seem to be zone starts. It doesn’t seem to be changes in line mates and it isn’t that the team as a whole automatically becomes a great corsi% team when trailing which Phaneuf could benefit from. When leading Phaneuf’s corsi% is 39.8% which is worse than the teams 41.2% and when trailing Phaneuf’s corsi% is 55.6% which is better than the teams 54.4%. It seems to me that the conclusion we must draw from this is that Phaneuf has been poor at protecting a lead relative to his team mates and we know his team mates have been poor at protecting a lead. Where Phaneuf excels is when he is asked to engage offensively be that when playing catch up hockey or when playing on the PP (Phaneuf’s PP statistics are pretty solid). From the first chart we know that Phaneuf has a slight bias towards more offensive zone starts (relative to his team mates) and when we dig into the numbers further it probably shows that he should be given even more offensive opportunities and given fewer defensive ones because he seems like a much better player when asked to be engaged offensively than when he is asked to be a shut down defenseman.

Acquiring a quality shut down defenseman (ideally two) this off season must be the #1 priority of Maple Leaf management and Phaneuf’s usage must shift further away from multi-purpose heavy work load defenseman to primarily an offensive usage defenseman.


Apr 232013

With the win over the Ottawa Senators on Saturday night the Leafs have made the playoffs for the first time since the 2003-04 season and they are doing it largely on the backs of an elevated shooting percentage which currently sits at a lofty 10.52% (5v5 only). Here are all the teams with a 5v5 shooting percentage above 9.00% since 2007-08 season and how they have done in the playoffs.

Season Team 5v5 Sh% Playoff Result
2012-13 Maple Leafs 10.52 Made playoffs
2012-13 Stars 10.04 Fighting for playoff spot (10th)
2011-12 Lightning 9.73 Missed Playoffs
2009-10 Capitals 10.39 Lost in first round
2009-10 Canucks 9.14 Lost in second round
2008-09 Penguins 9.76 Won Stanley Cup
2008-09 Canucks 9.23 Lost in second round
2008-09 Bruins 9.15 Lost in second round
2008-09 Thrashers 9.02 Missed Playoffs
2007-08 Senators 9.03 Lost in first round

Prior to this season there have been 8 teams with a shooting percentage above 9.00%, 2 missed the playoffs, 2 lost in the first round, 3 lost in the second round and one team won the Stanley Cup. That isn’t very much success at all which is not a good sign for Leaf fans (myself included) hoping their team can go on a playoff run.


Apr 172013

Even though I am a proponent of shot quality and the idea that the percentages matter (shooting and save percentage) puck control and possession are still an important part of the game and the Maple Leafs are dreadful at it. One of the better easily available metrics for measuring possession is fenwick percentage (FF%) which is a measure of the percentage shot attempts (shots + shots that missed the net) that your team took. So a FF% of 52% would mean your team took 52% of the shots while the opposing team took 48% of the shots. During 5v5 situations this season the Maple Leafs have a FF% of 44.4% which is dead last in the NHL. So, who are the biggest culprits in dragging down the Maple Leafs possession game? Let’s take a look.


Player Name FF% TMFF% OppFF% FF% – TMFF% FF%-TMFF%+OppFF%-0.5
MACARTHUR, CLARKE 0.485 0.44 0.507 0.045 0.052
KESSEL, PHIL 0.448 0.404 0.507 0.044 0.051
KOMAROV, LEO 0.475 0.439 0.508 0.036 0.044
KADRI, NAZEM 0.478 0.444 0.507 0.034 0.041
GRABOVSKI, MIKHAIL 0.45 0.424 0.508 0.026 0.034
VAN_RIEMSDYK, JAMES 0.456 0.433 0.508 0.023 0.031
FRATTIN, MATT 0.475 0.448 0.504 0.027 0.031
LUPUL, JOFFREY 0.465 0.445 0.502 0.02 0.022
BOZAK, TYLER 0.437 0.453 0.508 -0.016 -0.008
KULEMIN, NIKOLAI 0.421 0.454 0.51 -0.033 -0.023
ORR, COLTON 0.401 0.454 0.5 -0.053 -0.053
MCLAREN, FRAZER 0.388 0.443 0.501 -0.055 -0.054
MCCLEMENT, JAY 0.368 0.459 0.506 -0.091 -0.085

FF% is the players FF% when he is on the ice expressed in decimal form. TMFF% is an average of the players team mates FF% when they are not playing with the player in question (i.e. what his team mates do when they are separated from them, or a quality of teammate metric). OppFF% is an average of the players opponents FF% (i.e. a quality of competition metric). From those base stats I took FF% – TMFF% which will tell us which players perform better than their teammates do when they aren’t playing with him (the higher the better). Finally I factored in OppFF% by adding in how much above 50% their opposition is on average. This will get us an all encompassing stat to indicate who are the drags on the Leafs possession game.

Jay McClement is the Leafs greatest drag on possession. A few weeks ago I posted an article visually showing how much of a drag on possession McClement has been this year and in previous years. McClement’s 5v5 FF% over the past 6 seasons are 46.2%, 46.8%, 45.3%, 47.5%, 46,2% and 36.8% this season.

Next up are the goons, Orr and McLaren which is probably no surprise. They are more interested in looking for the next hit/fight than they are the puck. In general they are low minute players so their negative impact is somewhat mitigated but they are definite drags on possession.

Kulemin is the next biggest drag on possession which might come as a bit of a surprise considering that he has generally been fairly decent in the past. Looking at the second WOWY chart here you can see that nearly every player has a worse CF% (same as FF% but includes shots that have been blocked) with Kulemin than without except for McClement and to a much smaller extent Liles. This is dramatically different than previous seasons  (see second chart again) when the majority of players did equally well or better with Kulemin save for Grabovski. Is Kulemin having an off year? It may seem so.

Next up is my favourite whipping boy Tyler Bozak. Bozak is and has always been a drag on possession. Bozak ranks 293 of 312 forwards in FF% this season (McClement is dead last!) and in the previous 2 seasons he ranked 296th of 323 players.

Among forwards, McClement, McLaren, Orr, Kulemin and Bozak appear to be the biggest drags on the Maple Leafs possession game this season.


Player Name FF% TMFF% OppFF% FF% – TMFF% FF%-TMFF%+OppFF%-0.5
FRANSON, CODY 0.469 0.437 0.506 0.032 0.038
GARDINER, JAKE 0.463 0.44 0.506 0.023 0.029
KOSTKA, MICHAEL 0.459 0.435 0.504 0.024 0.028
GUNNARSSON, CARL 0.455 0.437 0.506 0.018 0.024
FRASER, MARK 0.461 0.445 0.506 0.016 0.022
LILES, JOHN-MICHAEL 0.445 0.443 0.503 0.002 0.005
PHANEUF, DION 0.422 0.455 0.509 -0.033 -0.024
HOLZER, KORBINIAN 0.399 0.452 0.504 -0.053 -0.049
O_BYRNE, RYAN 0.432 0.505 0.499 -0.073 -0.074

O’Byrne is a recent addition to the Leafs defense so you can’t blame the Leafs possession woes on him, but in Colorado he was a dreadful possession player so he won’t be the answer to the Leafs possession woes either.

Korbinian Holzer was dreadful in a Leaf uniform this year and we all know that so no surprise there but next up is Dion Phaneuf, the Leafs top paid and presumably best defenseman. In FF%-TMFF%+OppFF%-0.5 Phaneuf ranked a little better the previous 2 seasons (0.023 and 0.003) so it is possible that he is having an off year or had his stats dragged down a bit by Holzer but regardless, he isn’t having a great season possession wise.



Apr 162013

If you follow me on twitter you know I am not a fan of Tyler Bozak and I have written about him in the past. As a Leaf fan I want to keep writing about his poor play because I really do not want to see him re-signed in Toronto. He isn’t a good player and simple does not deserve it, especially if he is going to be making upwards of $4M/yr on a 4+ year long contract.  Let’s take a look at how he ranks in a variety of categories over the previous 3 seasons combined as well as this season.

Statistic 3yr 2012-13
5v5 G/60 219/324 130/310
5v5 A/60 168/324 144/310
5v5 Pts/60 199/324 139/310
5v5 IGP 265/324 195/310
5v5 IAP 202/324 221/310
5v5 IPP 288/324 268/310
5v5 FF20 155/324 173/310
5v5 FA20 319/324 309/310
5v5 FF% 275/324 291/310
5v4 G/60 116/155 57/147
5v4 A/60 144/155 98/147
5v4 Pts/60 150/155 89/147
5v4 IGP 76/155 66/147
5v4 IAP 131/155 110/147
5v4 IPP 139/155 114/147

The above are his rankings among other forwards (i.e. 219/324 means 219th among 324 forwards with >1500 5v5 3yr minutes, >300 5v5 2012-13 minutes, >400 5v4 3yr minutes and >75 5v4 2012-13 minutes.  2012-13 stats for games up to but not including last nights).  For 5v5 ice time we are essentially talking the top 10-11 forwards on each team, or their regulars and on the power play we are talking the top 5 forwards in PP ice time per team.

In 3-year 5v5 goals, assists and points per 60 minutes of play Tyler Bozak is ranking approximately the equivalent of a good 3rd line player. The thing is, he is doing that while playing on the first line but his terrible IGP, IAP, and IPP numbers indicate he is doing a terrible job keeping pace with his fellow first line mates.  If you look at his 3 year fenwick numbers (FF20, FA20 and FF%) which are on-ice stats you see when Tyler Bozak has been on the ice the Leafs have been mediocre at shot generation and terrible at shot prevention. Only a handful (literally, just 5 players) have a worse shot prevention record when they are on the ice.

On the power play things aren’t much better. He is second powerplay unit material at best but he is near the bottom of the pack in every assist and point generation and only a bit better in goal production.

Overall his numbers look a little better in 2012-13 but they certainly aren’t much to write home about, especially his IGP, IAP and IPP. He still looks to be a 3rd line offensive player with terrible defensive ability.

Another thing we can look at is his WOWY numbers with his most frequent line mate Phil Kessel.

Bozak w/Kessel Bozak wo/ Kessel
3yr GF20 0.874 0.648
3yr GA20 0.995 1.297
3yr GF% 46.8% 33.3%
3yr CF20 19.60 17.43
3yr CA20 20.89 20.82
3yr CF% 48.4% 45.6%
2012-13 GF20 0.956 0.000
2012-13 GA20 0.918 0.419
2012-13 GF% 51.0% 0.0%
2012-13 CF20 19.50 8.38
2012-13 CA20 21.53 25.55
2012-13 CF% 47.5% 24.7%

When Phil Kessel and Tyler Bozak are on the ice together they are not even breaking even. When Tyler Bozak is on the ice without Kessel they are significantly worse. Individually, Tyler Bozak has scored just 3 of his 26 5v5 goals (11.5%) and 8 of his 68 points (11.8%) over the previous 3 seasons when separated from Kessel despite playing nearly 20% of his ice time apart from Kessel. When not with Kessel his goal and point production drops significantly and as we know from above it wasn’t all that impressive to start with.

Not shown are Phil Kessel’s numbers when he isn’t playing with Tyler Bozak but they are generally better than when they are together. Phil Kessel when not playing with Tyler Bozak has a GF% of 50.4% and a CF% of 51.5% over the previous 3 seasons. Tyler Bozak appears to be a drag on Kessel’s offense.

The only argument you can for keeping Bozak is that the Kessel-Bozak-Lupul/JVR line has been productive and is working so why break them up. To me that argument only works when Bozak is making $1.5M and is not a significant drag on the salary cap but you can’t be paying a player $3.5-4M to essentially be a place holder between Kessel and Lupul/JVR.

Related News Article: James Mirtle wrote an article on the tough decision Leaf management has regarding the re-signing of Tyler Bozak.

(I am going to try and include a glossary in my posts for advanced statistics mentioned in the post so those not familiar with advanced stats can find out what they mean but a full glossary can also be found here).


  • G/60 – Goals scored per 60 minutes of play
  • A/60 – Assists per 60 minutes of play
  • Pts/60 – Points per 60 minutes of play
  • IGP – Percentage of teams goals while player was on ice that were scored by the player
  • IAP – Percentage of teams goals while player was on the ice that the player had an assist on
  • IPP – Percentage of teams goals while player was on the ice that player scored or had an assist on
  • FF20 – Fenwick (shots + missed shots) by team per 20 minutes of ice time
  • FA20 – Fenwick (shots + missed shots) against team per 20 minutes of ice time
  • FF% – % of all shot attempts (shots + missed shots) while on ice that the players team took – FF/(FF+FA)
  • GF20, GA20, GF% – same as FF20, FA20, FF% except for goals
  • CF20, CA20, CF% – same as FF20, FA20, FF% but also includes shot attempts that were blocked (corsi)


Apr 122013

The Toronto Maple Leafs shooting percentage has been predicted to fall for a couple of months now but it has held steady. I know that about 5-6 weeks ago the Leafs 5v5 shooting percentage was at 10.4% and I predicted it was sure to fall but as of this morning their 5v5 shooting percentage is even higher at 10.59%. Here is a graph of their 5v5 shooting percentage through out the season.

Toronto Maple Leafs 2012-13 Shooting %

Toronto Maple Leafs 2012-13 Shooting % (shots across x-axis)

League average 5v5 shooting percentage is normally just shy of 8% and the Leafs are about 33% higher than that which is incredibly high. Over the previous 5 seasons only one team has maintained a 5v5 shooting percentage above 10% over the course of an 82 game season and that was the Washington Capitals in 2009-10 when they shot at a 10.39% clip and only a handful of teams have managed to post a 5v5 shooting percentage above 9%. What the Leafs are doing is quite extraordinary even if it is a shortened season. Only 13.4% of the running 50 shot shooting percentage data points in the above graph fall below the typical league average of 8% so about 86.6% of the time they are at or above average in shooting percentage.

The only other team with a 5v5 shooting percentage above 10% this season is the Tampa Bay Lighting but they have been falling back a bit lately and in danger of falling below the 10% line as they currently sit at 10.01%.

Barring a collapse the Leafs should almost certainly end the season with a shooting percentage above 10% but it is difficult to know how much of it is luck/circumstance/randomness and how much is truly skill.


Mar 152013

A few people didn’t like that I suggested that Jay McClement was a bad player in yesterday’s Mikhail Grabovski post so I thought I would provide a visual representation of McClement’s  mediocrity in the form of 5v5 Zone Start adjusted CF% WOWY charts for each of the past 6 seasons (this season included).

Let’s start with this current season even though the sample size is relatively small and so the number of line mates with a reasonable number of minutes with McClement is relatively small.


In this chart, it is better for McClement to have the bubbles below and to the right of the diagional line indicating his teammates corsi for % improved when they were on the ice with McClement. As you can see, none did.

So, what about previous seasons?

Continue reading »

Mar 142013

Mikhail Grabovski is starting to get a little heat in Toronto. The other night against Winnipeg he benched for a good chunk of the game and people are starting to question what is wrong with Grabovski this season. Truth is, there is probably nothing wrong with Grabovski except for his line mate Jay McClement.

When one looks at Grabovski’s stats this season you will actually see that his 5v5 Goals/60 is actually up this year to 0.946 goals per 60 minutes of play from 0.895 last year and 0.924 the year before so his 5v5 goal production is certainly there. It is his assist totals that are down dramatically. The problem is his most frequent line mates are Nikolai Kulemin, Jay McClement and Leo Komarov, none of which are dynamic offensive players. McClement has never scored more than 12 goals in any season in his career and Kulemen had a 30 goal season in 2010-11 but never more than 16 otherwise and has just 9 goals in his last 97 games and Komarov is a rookie not known for his offensive ability. You can’t expect Grabovski, who probably isn’t a dynamic playmaking center to start with, to rack up a lot of assists with a pair of third line players on his wing.

On top of that, Jay McClement is actually a pretty bad hockey player. When the Leafs signed McClement in the summer I questioned the signing because he had terrible numbers in Colorado the previous 2 seasons.  In fact, over the past 2 seasons in Colorado and St. Louis he was 4th last in the league in 5v5 ZS Adjusted goals against per 20 minutes (sadly ahead of only Kessel, Bozak and Lupul). He also ranked 230th of 258 in terms of fenwick % over those 2 years. This season he is last on the Leafs in zone start adjusted fenwick % at a terrible 41.1%.

On top of McClement being pretty bad, the player McClement replaced on that line, Clarke MacArthur, is pretty good. MacArthur has the best fenwick % on the Leafs this season and in the 58:11 of 5v5 ice time he and Grabovski played together this year they had a corsi % of 57.1% while Graobovski has been at 41.7% when separated from MacArthur. Last season when Grabovski and MacArthur played together they were at 56.0% and when Grabovski was without MacArthur he was at 50.9%. In 2010-11 Grabovski’s corsi% was 55.3% with MacArthur and 47.0% without.

In summary, there is nothing wrong with Grabovski. It is the coach that took a good player who had very good ‘chemistry’ with Grabovski off Grabovski’s line replacing him with at best a mediocre 3rd liner to go with the other 3rd liner on his other wing. Maybe when Lupul comes back Carlyle will be forced to put a real top 6 winger on the Grabovski line and then people will stop asking “What is wrong with Grabovski?” but until then, blame Jay McClement (with a primary assist to Randy Carlyle).


Mar 122013

Yesterday I posted an article on comparable players to Tyler Bozak so today I thought I’d tackle the Maple Leafs other key free agent forward, Clarke MacArthur. As with Bozak, I first looked at the offensive stats Goals/60, FirstAssists/60, Primary Points/60 and Primary Points % (percentage of goals scored while on the ice that the player had a goal or a first assist on). Here is a list of offensively comparable wingers:

Player Name G/60 FirstA/60 PPts/60 PPts%
TLUSTY, JIRI 1.094 0.501 1.595 53.01%
PERRON, DAVID 0.991 0.521 1.512 55.75%
MACARTHUR, CLARKE 0.979 0.513 1.492 55.20%
SYKORA, PETR 0.916 0.593 1.509 56.01%
MOULSON, MATT 0.898 0.647 1.545 54.44%
SIMMONDS, WAYNE 0.891 0.563 1.454 59.61%
PARISE, ZACH 0.875 0.533 1.408 58.74%
OKPOSO, KYLE 0.867 0.591 1.458 59.71%
MALONE, RYAN 0.844 0.619 1.463 53.06%
MCGINN, JAMIE 0.796 0.703 1.499 57.10%
PARENTEAU, PIERRE 0.659 0.931 1.59 59.42%

The above list was selected for similar PPts/60 and PPts% to MacArthur and then sorted by G/60 and identifies the most comparable offensive players to MacArthur. McGinn and Parenteau are not the goal scorers of MacArthur and the others so probably deserve to be dropped from the list.

As an aside, it is quite hilarious to think that the Minnesota Wild have committed nearly $100M over 13 years to Parise when Parise’s best offensive comparable the past year+ is Kyle Okposo. The Wild better hope Parise gets back to his 2008-09 and 2009-10 form when he scored 83 goals and 176 points over that 2 year period or else they are spending a ton of money for a second tier winger.

So, what about defensively? In the Bozak article, to evaluate players defensively I looked at their corsi against per 20 minutes relative to their teammates corsi against per 20 minutes and suggested any players that improved their teammates corsi against is probably a decent defensive player. Here is how that comparison looked for MacArthur.

Player Name CA20 TMCA20 CA20/TMCA20
MACARTHUR, CLARKE 18.634 19.686 0.947
PARENTEAU, PIERRE 18.782 19.269 0.975
PARISE, ZACH 15.671 15.904 0.985
SYKORA, PETR 14.741 14.567 1.012
MOULSON, MATT 19.445 19.112 1.017
MCGINN, JAMIE 19.053 18.678 1.020
OKPOSO, KYLE 19.398 18.983 1.022
PERRON, DAVID 16.821 16.247 1.035
SIMMONDS, WAYNE 19.346 18.558 1.042
MALONE, RYAN 19.422 18.539 1.048
TLUSTY, JIRI 20.576 19.400 1.061

The list is sorted by CA20/TMCA20 and the lower the number the greater they improved their teammates corsi against rate. In this list, MacArthur comes out on top which is a suggestion that he is probably a good defensive player, or at minimum not a defensive liability. Since Perron, Parise and Sykora have significantly better defensive teammates it is more difficult for them to improve their teammates CA20 so I am not convinced that MacArthur is better than them, but MacArthur’s defensive numbers look good.

So, with that in mind, what is MacArthur worth? Ignoring the Zach Parise comparison, he is probably worth in the $3-4M/yr range. Matt Moulson is in the middle of a 3 year deal worth a little over $3.1M/yr. Okposo is in the second year of a 5 year RFA deal paying him $2.8M/yr. Wayne Simmonds signed a long term extension at just shy of $4M/yr. Parenteau signed as a UFA in Colorado for 4 years at $4M/yr. David Perron signed an RFA deal that pays him an average of just over $3.8M. Ryan Malone is in the middle of a contract that is paying him $4.5M/yr.

For me, I would like to see the Leafs sign MacArthur to a 4 year contract extension, preferably in the $3.5-4M/yr range. That would be a fair contract for both sides.

Mar 112013

There has been a fair bit of talk recently about Tyler Bozak and what the Leafs should do with him as he is clearly not suited for his #1C role but is set to be a UFA this summer and if the Leafs intend to keep him he’ll need a new contract.  To get an idea of his worth, I decided to see if I could identify a few comparable players.

Let’s start off offensively. The first thing I looked at was primary points per 60 minutes of 5v5 ice time (primary points = goals + first assists). From last year through this past weekend’s games Bozak had a PrPts/60of 1.085 so as an initial cut off I pared down the list of comparable players to forwards a PrPts/60 of between 1.00 and 1.20 and who have had at least 1000 minutes of ice time. There are some pretty good players in this list such as Ryan Getzlaf, Stephen Weiss, Tomas Plekanec and Daniel Breiere but there are some less talented players like Eric Nystrom and Marcel Goc.

The next thing I considered is Primary Points Percentage (PrPts%), or the percentage of goals scored while the player was on the ice. Tyler Bozak’s PrPts% is a relatively weak 41.24% (Getzlaf, for example, is 52.38% and Plekanec’s is 56.22%). I then pared down the list to just include centers and this is what I came up with as comparable offensive centers, sorted by PrPts%.

Player Team PPts/60 PrPts%
NIELSEN, FRANS NY Islanders 1.091 47.98%
SMITH, ZACK Ottawa 1.008 46.67%
VERMETTE, ANTOINE Phoenix 1.173 46.55%
LETESTU, MARK Columbus 1.138 46.32%
NUGENT-HOPKINS, RYAN Edmonton 1.182 46.14%
ZUBRUS, DAINIUS New Jersey 1.12 45.31%
KRUGER, MARCUS Chicago 1.115 43.78%
HANZAL, MARTIN Phoenix 1.078 42.27%
STAJAN, MATT Calgary 1.064 41.87%
BOZAK, TYLER Toronto 1.085 41.24%
KOIVU, SAKU Anaheim 1.15 38.49%

That is a list of mostly 2nd and 3rd line centers along with not yet fully developed Nugent-Hopkins. So, what about Bozak defensively? To evaluate defensive play I looked at the players 5v5 corsi events against per 20 minutes (CA20) and the ratio of the players CA20 vs his team mates CA20 when they are not playing with him (TMCA20). This gives us an indication of whether their team mates are improving their defensive stats while on the the ice with the player.

Player Name Team CA20 CA20/TMCA20
ZUBRUS, DAINIUS New Jersey 14.309 0.77
LETESTU, MARK Columbus 17.034 0.90
STAJAN, MATT Calgary 17.312 0.91
HANZAL, MARTIN Phoenix 18.122 0.93
VERMETTE, ANTOINE Phoenix 17.762 0.97
NIELSEN, FRANS NY Islanders 18.307 1.01
KOIVU, SAKU Anaheim 17.114 1.02
SMITH, ZACK Ottawa 18.771 1.04
KRUGER, MARCUS Chicago 15.940 1.05
BOZAK, TYLER Toronto 21.155 1.08

For CA20/TMCA20, the lower the number the better as this indicates their line mates CA20 is better with the player than not with the player. Bozak ranks dead last in this category and also ranks dead last (by a significant margin) in CA20.

So, what does this tell us about Tyler Bozak?  Well, it probably means he has 3rd line offensive ability but it is very questionable whether he is good enough defensively be a useful 3rd liner. As for the best comparable to Tyler Bozak, I’d have to say either Marcus Kruger or Matt Stajan or maybe Frans Nielsen but Bozak is probably somewhat below all of them in terms of value due to his poor defensive play.


Feb 212013

Over the past few years I have had a few discussions with other Leaf fans about the relative merits of Francois Beauchemin. Many Leaf fans argue that he was a good 2-way defenseman who can play tough minutes and is the kind of defenseman the Leafs are still in need of. I on the other hand have never had quite as optimistic view of Beauchemin and I don’t think he would make this team any better.

On some level I think a part of the difference in opinion is that many look at his corsi numbers which aren’t too bad but I prefer to look at his goal numbers which have generally not been so good. So, let’s take a look at Beauchemin’s WOWY numbers and see if there is in fact a divergence between Beauchemin’s corsi WOWY numbers and his goal WOWY numbers starting with 2009-11 5v5 WOWY starting with CF% WOWY.


I have included a diagonal line which is kind of a ‘neutral’ line where players perform equally well with and without Beauchemin. Anything to the right/below the line indicates the player played better with Beauchemin than without and anything to the left/above they played worse with Beauchemin. As you can see, the majority of players had a better CF% with Beauchemin than without. Now, let’s take a look at GF% WOWY.


While a handful of players had better GF% with Beauchemin, the majority were a little worse off. There is a clear difference between Beauchemin’s CF% WOWY and his GF% WOWY. What is interesting is this difference can be observed in 2007-08, 2009-10, 2010-11, and 2011-12 (he was injured for much of 2008-09 so his WOWY data is not reliable due to smaller sample size). Looking at his 5-year WOWY charts you get a clear picture that Beauchemin seemingly has a skill for ‘driving play’ but not ‘driving goals’. Let’s dig a little further to see if we can determine what his ‘problem’ by looking at his 2009-11 two year CF20, GF20, CA20 and GA20 WOWY’s.





As you can clearly see, Beauchemin appears to be much better at generating shots and shot attempts than he is at generating goals. The majority of players have a higher corsi for rate when with Beauchemin than when not with Beauchemin but the majority also have a lower goals for rate. What about ‘against’ rates?





For CA20 and GA20 is is better to be to be above/left of the diagional line because unlike GF%/CF%/GF20/CF20 it is better to have a smaller number than a larger number. There doesn’t seem to be quite as much of a difference between CA20 and GA20 as with CF20 and GF20 so the difference between CF% and GF% is driven by the inability to convert shots and shot attempts into goals as opposed to the defensive side of the game. That said, there is no clear evidence that Beauchemin makes his teammates any better defensively.

There are two points I wanted to make with this post.

  1. Leaf fans probably shouldn’t be missing Beauchemin.
  2. For a lot of players a corsi evaluation of that player will give you a reasonable evaluation of that player but there are also many players where a corsi evaluation of that player will not tell the complete story. Some players can consistently see a divergence between their goal stats and their corsi stats and it is important to take that into consideration.