Critiquing plus/minus and corsi fairly

There is a recently posted article on BroadStreetHockey.com discussing overused and overrated statistics. The first statistic on that list is Plus/Minus. Plus/minus has its flaws and gets wildly misused at times but it doesn’t mean it is a useless statistics if used correctly so I want to defend it a little but also put it in the same context as corsi. The rational given in the BroadStreetHockey.com article for plus/minus being a bad statisitcs is that the top of the plus/minus listing is dominated by a few teams. They list the top 10 players in +/- this season and conclude:

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Face offs and zone starts, is one more important than the other?

I brought this issue up on twitter today because it got me thinking. Many hockey analytics dismiss face off winning % as a skill that has much value but many of the same people also claim that zone starts can have a significant impact on a players statistics. I haven’t really delved into the statistics to investigate this, but here is what I am wondering.  Consider the following two players: Player 1: Team wins 50% of face offs when he is on the ice and he starts in the offensive zone 55% of the time. Player 2: Team wins 55%

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Player TOI usage charts

One of the challenges in hockey analytics, or any type of data analysis, is how to best visualize data in a way that is exceptionally informative and yet really simple to understand. I have been working on a few things can came up with something that I think might be a useful tool to understand how a player gets utilized by his coach. Let’s start with some background. We can get an idea of how a player is utilized by looking at when the player gets used and how frequently he gets used.  Offensive players get more ice time on

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Tim Connolly and individual PK%

Yesterday evening James Mirtle from the Globe and Mail posted an article on The Curious case of Tim Connolly and the Leafs.  It’s worth a read so go read it but the premise of the article is how the narrative around Tim Connolly in training camp is he had a poor year last year and he needs to perform better this year.  Makes sense from most peoples view points but Connolly tries to present a different perspective. Connolly can be prickly to deal with and wasn’t particularly interested in talking about last season, but when pressed, you could tell he

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More stats than you'd ever want (I hope)…

I have just updated my stats site (stats.hockeyanalysis.com) to include a number of new features.  The added features are: 1.  I have added a new situation – 5v5close.  5v5close is when the game is tied or within 1 goal in the first and second period or tied in the third period.  This is what I would call normal play where teams are more or less (depending on talent or game play/coaching style) equally interested in  playing offense or defense.  When teams get a larger lead or lead late in the game teams adjust their style of play to either protect

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Was Corey Perry more valuable in 2010-11 than Previous Seasons?

By all accounts, Corey Perry had an exceptional season in 2010-11 and this is particularly true down the stretch when he flew by Steven Stamkos for the lead in goals scored and pushed himself into serious contention from the Hart Trophy as the leagues most valuable player.  There is no doubt that Perry’s production level surpassed anything he had previously done in his career, but was he truly more valuable to the Ducks than in previous seasons?  Let’s look at the numbers. Season GP Goals Assists Points +/- PPG PPA PP Points 2010-11 82 50 48 98 9 14 17

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Overtime/Shootout Stats

Gus Kastaros this morning posted some NHL overtime statistics on his twitter account this morning which got me digging into the stats a little more. KatsHockey > Overtime on the other hand is at #NHL record setting pace of 208 games .. in past week (7 days) have been 8 OT games KatsHockey > Only six shootouts in #NHL thus far & only two shootout games in past 42 games one week ago .. pace has dipped to post-lockout low of 96 If that wasn’t interesting itself, there have been 20 overtimes this year.  In the first 11 overtimes there

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