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December 31, 2012
Howe and Why
Passes

by Robert Vollman

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We thought we'd start off the new year with a new statistic, one that we hope can start to answer questions including which players are the league's best playmakers, and which players pass when they should be shooting (and vice versa). In so doing, we discovered Brian Campbell's unnaturally strong season in Florida last year, and an underrated playmaking star in Colorado.

Since shots can be an effective way to track a player's goal-generating performance in a way that's independent of his shooting luck, let's define a sister statistic called "passes", which is the number of passes that directly resulted in shots (you can call them "shot assists" if you want). Unlike shots, this statistic isn't tracked by the NHL, but we can create an estimate by dividing a player's assists by the average number of assists per goal (1.7) and then dividing that by the average on-ice shooting percentage of his linemates. This approach, which could admittedly be further refined by separating out power play time, should provide a decent estimate of how many of the player's passes resulted in shots on goal.

Passing leaders, 2011-12

Player           Team         Passes
Brian Campbell   Florida      476
Joe Thornton     San Jose     416
Henrik Sedin     Vancouver    408
Claude Giroux    Philadelphia 402
Ryan Getzlaf     Anaheim      360
Erik Karlsson    Ottawa       358
Anze Kopitar     Los Angeles  349
Mark Streit      NY Islanders 341
Alex Pietrangelo St. Louis    330
Ryan O'Reilly    Colorado     329

This new statistic really highlights Brian Campbell's resurgence in Florida, resulting in 476 passes—the highest total in the past four seasons. While Campbell saw a steady decrease in Chicago from 321 in 2008-09 to 232 in 2009-10, and finally 140 in 2010-11, his heavy-minutes, first-line usage in Florida gave him the opportunity for maximum offensive contribution.

The remainder of the top 10 offers up few surprises except young Ryan O'Reilly, who played on Colorado's tough minutes line along with Calder Trophy winner Gabriel Landeskog. O'Reilly, who managed just 136 and 114 passes in the previous two seasons, shot up to 329, ahead of established playmakers like John Tavares (324), Eric Staal (320), and Evgeni Malkin (319).

Pass-to-Shot Ratio

The interesting thing about top playmakers like Joe Thornton and Henrik Sedin is that their own shooting percentage is consistently higher than the average of their linemates—so perhaps they pass too often?

Pass-to-shot ratio is simply a player's passes divided by his shots, and in order to maximize offense you would hope that it would match up with the relationship between the shooting percentage of a player's linemates and his own. Unfortunately for forwards, as you can see, it often doesn't!

Pass-to-shot ratio leaders, 2011-12

Forward           Team       PSR  SH%  On-ice SH%
Henrik Sedin      Vancouver  3.6 12.4%   9.5%
Joe Thornton      San Jose   2.7 11.5%   8.2%
David Desharnais  Montreal   2.5 16.3%  10.4%
Alex Tanguay      Calgary    2.3 15.4%  10.5%
Kyle Wellwood     Winnipeg   2.3 19.4%   7.8%
Nicklas Backstrom Washington 2.1 14.7%   8.6%
Marcus Johansson  Washington 2.1 15.6%  10.0%
Jussi Jokinen     Carolina   2.0 10.2%   8.5%
Ryan Getzlaf      Anaheim    1.9  5.9%   7.4%
Mike Ribeiro      Dallas     1.9 12.7%   9.5%
Minimum 100 Passes

In fairness, forwards tend to have higher shooting percentages (average 10.2%) than on-ice shooting percentages (average 8.0%) for two reasons. The former is boosted by the power play while the latter is not (once again: this new statistic can be refined), and also because defensemen take a lot of low probability shots.

Even once that's taken into account, of the 10 forwards with the highest pass-to-shot ratio, only Ryan Getzlaf and possibly Jussi Jokinen appear to clearly be making passing decisions wisely. It's puzzling why certain players pass twice as often as they shoot when they're clearly capable scorer. Arguably the Vancouver Canucks could have scored four more goals if Henrik Sedin were closer to pass/shot parity—which equates to more than a point in the standings and a million dollars in value.

On the flip side there are obviously some players with very low pass-to-shot ratios—but with a few exceptions they aren't the players who would have guessed.

Lowest pass-to-shot ratios, 2011-12

Forward           Team       PSR  SH%  On-Ice SH%
Mike Santorelli  Florida    0.2  7.7%   4.6%
Rene Bourque     CGY/MTL    0.3 11.4%   7.6%
Sean Bergenheim  Florida    0.3  9.2%   6.5%
Eric Nystrom     Dallas     0.4 15.7%   6.8%
Jeff Carter      CBJ/LA     0.5 11.4%   8.4%
Jim Slater       Winnipeg   0.5 11.0%   8.1%
Jason Blake      Anaheim    0.5  6.4%   5.4%
Patric Hornqvist Nashville  0.5 10.9%   8.5%
David Clarkson   New Jersey 0.5 13.2%   7.8%
David Dorsett    Columbus   0.5  8.8%   6.5%
Minimum 100 Shots

With only a couple of exceptions at best, not many of them have the sniping skills to warrant their tendencies to take two or more shots for every pass. In other news, Jeff Carter was probably not the best linemate for sniper Rick Nash!

Wrapping Up

This new statistic is meant to relate to assists in the same way that shots relate to goals, except that we must estimate these totals until they're counted manually. Much like shots, the advantage of looking at passes is the removal of the influence of shooting percentages so you can truly see who is most adept at creating shots, and who is passing when they should be shooting.

That's it for our preliminary look at this new statistic. Stay tuned for further refinements, and check out the raw data for yourself over at Hockey Abstract.

Robert Vollman is an author of Hockey Prospectus. You can contact Robert by clicking here or click here to see Robert's other articles.

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From Daigle To Datsyuk (12/28)
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Howe and Why (10/10)
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