Fenwick

Fenwick is a puck-possession proxy nearly identical to corsi, counting shot attempts for and against while a player is on the ice, but leaving out blocked shots. It keeps only unblocked shot attempts: shots on goal and shots that missed the net.

The reasoning behind excluding blocks is that a blocked shot reflects a defender's positioning and shot-blocking skill as much as it reflects the attacking team's possession or pressure, so including it can muddy a possession signal. Fenwick is usually expressed the same way as Corsi, as a differential or as a percentage, FF% = FF / (FF + FA), and the two measures are highly correlated in practice, with most analysts treating them as close substitutes rather than measuring meaningfully different things.

The metric takes its name from a hockey blogger who argued for dropping blocked shots from the count. Like Corsi, Fenwick is used to evaluate territorial dominance and predict future goal differential better than raw goals or plus-minus alone, and both feed into more refined models that weight shots by danger, since shot quality varies enormously by location and situation and a simple shot-attempt count treats a point-blank chance the same as a long-range attempt. Score effects and game state remain a caveat for both stats.