Accounting for Teammates Part 1: Corsi Rel and WOWY

Jared Lunsford
July 18 2012 05:56PM

 

 

The quality of teammates influences almost every stat in all major sports. This is particularly true of the base stats we tend to use, such as on-ice Corsi or Fenwick rate, because they don't just take something a player has done (score a goal) but also include what his teammates did while he was on the ice. The reason we opt for on-ice stats instead of individual is simple - on-ice stats allow us to measure, albeit noisily, all the contributions a player makes to the thing you are measuring.

How often do you hear an announcer say "that kind of play doesn't show up on the stat sheet, but was very important"? If you're measuring on-ice stats instead of individual stats, and you have a large enough sample, those small plays will show up. The trick is accounting for teammate quality, or at the very least taking it into consideration.

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Improving AHL Equivalencies: AHL to NHL Shot Metrics Translations

Kent Wilson
July 18 2012 01:40PM

 

 

The following work is based on data collected and analyzed for two previously published articles at Habs Eyes on the Prize appearing here and here.

By: Stephen Cooper

Introduction

Ever since Gabe Desjardins calculated the first NHL scoring equivalencies from NHL feeder leagues, the use of NHLE has been standard for “fancystat” analysis of prospect players. The original system has been refined by many, including Bruce Peter of Puck Worlds and Rob Vollman of Puck Prospectus. But the basic system of looking at only goals and points on a per game basis has remained essentially the same since the venerable and terrifying Desjardins made his first foray on the subject.

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Goaltenders with and without Ken Hitchcock

Cam Charron
July 17 2012 01:26PM

 

 

This has been cooking for quite some time, but I'm finally getting around to posting a little bit of data I've collected. In an effort to better understand goaltenders, I've compiled even strength save percentage numbers from NHL.com and have begun filing through them.

Jonathan Willis wrote a post about Dave Tippett and Ilya Bryzgalov over at Cult of Hockey where he concluded that a lot of goalies were prone to fluctuations in save percentage and that coaches can't really control a goaltender's save percentage. I was interested, because I'd been looking a bit at Ken Hitchcock's work.

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Quantifying players' impact on teammate shooting percentage

Eric T.
July 17 2012 08:39AM

 

 

One recurring source of debate is the question of how much a playmaker improves his linemates' shooting percentage.

Just asking whether some players repeatedly post high on-ice shooting percentages is not digging deep enough. Every year, the Canucks have an above-average shooting percentage during the minutes that Henrik Sedin is on the ice, but how much of that is because he individually shot for a high percentage, how much is because he played with teammates who are skilled at taking dangerous shots, and how much is because he actually helped his teammates' shooting?

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NHLNumbers Podcast: A Look at Free Agency, with James Mirtle

NHLnumbers Podcast
July 16 2012 01:12PM

 

 

In the latest installment of the podcast, we discussed the not-so-frenzied free-agent frenzy.

In the first part, Corey, Chase and I talked about the signings, including what Parise and Suter mean to the Wild, where Detroit will go from here, the Carey Price and Jonathan Quick contract extensions as well as the Tampa Bay Lightning signing Matt Carle.

James Mirtle of the Globe and Mail was kind enough to join Brent and me to talk about the big signings, what Burke has up his sleeve in Toronto and the CBA negotiations.

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