PWHL Rink Bias

Anyone who has followed advanced stats work for the NHL will likely be familiar with discrepancies in how shots have been tracked at different rinks. Most notably, the folks at MSG were especially kind to goaltenders in the early days of event data. With the PWHL on hiatus for the Worlds, it seemed like an …

xG Model Part 1: Rink Bias – Accounting for Scorekeeper Bias in Shot Location Coordinates

In this inaugural post, we're going to explore the first step in building an expected goal model for the NHL. I intend to lay out how scorekeeper bias in the recording of shot locations is going to be accounted for. In an attempt to make things easier to follow, we'll consider a concrete example using …