PLAYER CONTRIBUTION
(2003)
Player Contribution is a method for allocating credit for a team’s performance to the individual contributors on a hockey team.
More precisely, it is a way of allocating a team’s wins to individual players. It puts offense, defense and goaltending performance on the same page, in the same currency.
Defense has always been the toughest part of the game to isolate. The real power of Player Contribution is its ability to get at defensive contribution in a meaningful way. The way to do that is to isolate the component parts of the game. If you identify offense and goaltending, the rest must be defense.
PLAYER CONTRIBUTIONS VS GVT
(Nov 2009)
Player Contribution
In 2003,Ryder introduced the first serious attempt at measuring a player's total contribution (offense, defense, etc.) with a single statistic. Player Contribution, or PC for short, is very similar to GVT in both methodology and results, but unlike GVT, PC uses all the currently available statistics, which generally makes it more accurate.
Offense
Expect the offensive component of PC, known as PCO, to yield results that are very similar to Offensive GVT. As a very general frame of reference, an average PCO is about 8 times an average Offensive GVT.
GVT tends to favor puck-moving defensemen and players with reduced ice-time, whereas PC will favor the shootout artists, and the grittier penalty-drawing players, as shown below
PCO favors checkers and penalty drawers
The big differences between PC and GVT are in the defensive zone. PCD, the defensive component of PC, incorporates penalties to a greater degree than does GVT.
If you look at all of the available statistics, every NHL player seems to have a certain pattern. In my experience, there are only a couple dozen patterns at most, and evaluating a skater statistically involves finding out which pattern applies to them, and then determining to which level they play that role.
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