Hockey Graphs’ Ryan Stimson and Corey Sznajder have done an upsetting amount of manual data collection over the last few years. Building off foundational research by Sznajder, Eric Tulsky, Geoffrey Detweiler, Robert Spencer (PDF), and Jen LC, Sznajder and Stimson have been watching games to record information about tactics that just doesn’t exist in the standard NHL data sets that drive so-called “advanced stats” like shot-attempt percentage, expected goals, and PDO.
Stimson has published four years of data in an interactive application, called the Player Traits and Performance Comparison Tool. When I opened the tool, the first thing I did was look up some young Caps defensemen. What I found was fascinating.