How important are faceoffs to possession in women’s hockey?


This was co-written by Mike Murphy, Alyssa Longmuir, and Shayna Goldman based on work for the Big Data Cup and Ottawa Hockey Analytics Conference
.

As a result of women’s hockey analytics needing to play “catch up,” it’s not unusual to see analysts relying on stats that have already been proven to be less insightful in the men’s game. One such area of the game that is frequently highlighted at the collegiate, professional, and international levels of the women’s game are faceoffs. 

Faceoffs have been covered extensively in men’s hockey, and much of that work points to the fact that faceoffs wins aren’t all that they’re chalked up to be. Back in 2015, Arik Parnass, now of the Colorado Avalanche, found, “This … aligns with what hockey analysis has found over the years when it comes to faceoffs. Overall, winning them just isn’t as important as it’s made out to be.” 

While a great deal of work has been done on the importance (or lack thereof) of faceoffs in the men’s game the same cannot be said of women’s hockey. But why would it be any different? 

Continue reading

Introducing NWHLe and Translation Factors

In April 2017, Rob Vollman tweeted out what he called “rough and preliminary” translation factors for women’s hockey. At the time, I was playing around with counting stats from two years of NWHL and CWHL hockey, and wanted to develop as many tools and resources as I could to better understand the women’s game. Curious to know what the competitive landscape of post-collegiate hockey looked like in North America and elsewhere, I began to keep track of data with the intention of building on Rob’s translation factors.

The world of women’s hockey in North America has changed dramatically in the three years since Rob’s tweet. My initial plans went up in smoke when the CWHL suddenly folded after the 2018-19 season. As a result, I shifted my focus to developing NWHL equivalency factors – or NWHLe – for NCAA DI, NCAA DIII, and USports. Unfortunately, it quickly became apparent that the sample size of USports alumnae to play a significant number of games in the NWHL was too small to work with.

Continue reading