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Top 20 Team Adjusted Corsi Ratings

The next step in my sabermetrics and hockey posts is to take the top 20 players by their raw Corsi ratings and begin to gather some context for their performances.  The first step is to adjust these numbers for the team in which the player played.  This is done using the team Corsi ratings.  Since teams have five players on the ice in even strength situations, the team Corsi is divided by five and used as a baseline for a player on each given team.

This step better isolates the top puck possession players from their team performance.

Here are the top 20 players by team adjusted Corsi ratings in 2011/12:

2011/12 Top 20 Team Adjusted Corsi Ratings
 Unadjusted Rank
1Zdeno CharaBos+327.6


2Patrice BergeronBos+297.6


3Tyler SeguinBos+296.6


4Daniel SedinVan+293.8


5Henrik SedinVan+286.8


6Justin WilliamsLA+276.8


7Erik KarlssonOtt+268.0


8Anze KopitarLA+267.8


9Chris KunitzPit+263.2


10Brad MarchandBos+255.6


11Alexandre BurrowsVan+251.8


12Joe ThorntonSJ+250.4


13Andrew LaddWin+247.2


14Gabriel LandeskogCol+232.8


15Corey PerryAna+220.2


16Evgeni MalkinPit+219.2


17Alex PietrangeloStL+215.2


18Ryan GetzlafAna+209.4


19Patrick SharpChi+203.6


20James NealPit+203.2


This list is not significantly changed from the raw Corsi list.  The top three players remain in the same order.  They are all Boston Bruin players who largely played together - led by Zdeno Chara.  Next up are the Sedin brothers.  In fact only five players are on this list who are not among the top 20 raw Corsi ratings.  They are Gabriel Landeskog, Andrew Ladd, Alex Pietrangelo and the Anaheim pair of Ryan Getzlaf and Corey Perry.  These are top players on poor puck possession teams. 

There are many reasons why these players have good puck possession numbers.  They have all succeeded in their roles with their teams.  In part this is due to their skills and also due to the roles they play on their teams.  Many of these players play in offensive roles with many offensive zone starts and good teammates.  These are factors that need to be accounted for in order to make Corsi truly a player ranking system.

One interesting case study that I will look at in the future is Andrew Ladd. He is a player who keeps showing up on top Corsi lists yet is not seen as a star by most people.  It is interesting to see why he ranks this high on a regular basis.

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shanetx's avatar

Team adjusted corsi strikes me as a problematically flawed stat.  Conceptually, I understand it’s an effort to recreate something like FIP or the various stats in baseball that take out the team’s role in a player’s success or failure but the Malhotra/Sedin examples show pretty clearly why this stat doesn’t work yet in hockey.  The role of a top line player and bottom line player changes more than most baseball positions and the team-to-team approaches are so vastly different that it makes meaningful comparisons difficult.  It’s not like any baseball teams utilize four outfielders and three infielders, which would be analogous to the differing approaches of trap teams like the Lightning compared to the Canucks (at least when Sedins are on the ice). 

I feel like one mistake sabermetric proponents are making is they’re trying to implement a baseball like system when the sports are too different.  Basketball sabermetric seems to bve gravitating a different direction; ie, it’s not hard to find Ray Allen’s shooting %, attempts, makes and misses, challenged or unchallenged, from fifteen different spots, and you can even find success rate in varying game situations.  Does this sort of observation-based thoerycrafting exist publically in hockey, or is it all flawed metrics like Corsi that attempt to use statistics to measure worth independent of performance?

Obviously the teams have staff that track things none of us have access to, but is there a “baseball prospectus” for hockey that can give me, say, Johan Franzen’s accuracy from a variety of situations?  I think simple things like “Rick Nash tends to carry the puck an average of ten seconds prior to each goal he scores” versus, “Louie Ericsson averages 3 seconds per goal” would sure tell us things about players and help predict where they’d work out well; ie, with a setup guy looking to feed them one-timers or with a grinder whose role is to hunt the puck down and get it back out to the offensive guys.

Posted by shanetx from Floydada, Texas on 07/26/12 at 04:32 PM ET

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imageThe Puck Stops Here was founded during the 2004/05 lockout as a place to rant about hockey. The original site contains over 1000 posts, some of which were also published on FoxSports.com.

Who am I? A diehard hockey fan.

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