Rush Shots and Defensive Zone Play of Maple Leaf Defensemen

The other day over at PensionPlanPuppets.com there was a post by Draglikepull looking at zone exits by Maple Leaf defensemen for the first half of last season. If you haven’t seen it yet, definitely go read it. I wanted to compare the zone exit data to my rush shot data which I have calculated from play by play data as explained here. If we can find good correlations between zone entry/exit data and my rush shot data that would be an excellent finding because the zone entry/exit data need to be manually recorded and is very time consuming. Thankfully this

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Why can’t players boost a goalies save percentage?

The other day I put up a post on Mike Weaver’s and Bryce’s Salvador’s possible ability to boost their goalies save percentage and I followed it up with a post on the Maple Leafs defensemen where we saw Phaneuf, Gunnarsson, Gleason and Gardiner all seemingly able to do so as well while Robidas had the reverse effect (lowering goalie save percentage). This got some fight back from the analytics community suggesting this is not possible. My question to them is, why not? Their answer is that if you do year over year analysis of a players on-ice save percentage or

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State of the Leafs – Defense and Goaltending

Last week I took a look at the Leafs forwards, today I’ll take a look at their defense and goaltending.  As with the forwards, I’ll evaluate the defensemen using their 5v5 zone start adjusted HARO+, HARD+ and HART+ ratings but with goalies I will evaluate them using their 5v5 zone start adjusted HARD+ rating and save percentage.  I have included the past 5 individual seasons as well as the most recent 3 year rating and 5 year rating.  Personally, I like to use 3 year ratings as the best guide for player value as it gives a large sample size

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Defenders effect on Save %

It has been shown on numerous occasions that players can influence their own teams on-ice shooting percentage be that through their talents or their style of play.  An example is the PDO vs Luck article I posted the other day.  In that article there is a table that clearly shows that shooting percentage varies across players and that players who are given more ice time (presumably because they are better players) have higher shooting percentages.  The same was not true for on-ice save percentage though.  On-ice save percentages were not ‘stratified’ according to ice time. That study looked at forwards and I

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Leafs Off Season: Search for a Defenseman

As it stands right now the Leafs have six NHL experienced defensemen under contract and another three who are restricted free agents.  Assuming all three of the RFA’s get re-signed it leaves the Leafs with 7 defensemen, five of which will be regulars (Phaneuf, Schenn, Gunnarsson, Aulie and Komisarek) and two that are more along the lines of depth defensemen (Lebda and Lashoff).  Phaneuf and Schenn are the top two guys (though they may not end up playing together) and depending on where you see Gunnarsson and Aulie fitting into the mix the Leafs will be looking for a #3,

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Player Evaluation Model Improvements

On Monday I outlined an all-encompassing player evaluation model that allows us to evaluate every forward, defenseman and goalie under the same methodology.  In short, the system compares how many goals are scored for and against while a player is on the ice and compares it to how many goals scored for/against one should expect based on the quality of his line mates and opposition.  That model, I believe, makes a reasonable attempt at evaluating a players performance, but it can be improved. The first method of improvement is to utilize the additional information we have about the quality of

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