Explore

The data, sorted however you want

Each surface is fed by the season's Hawk-Eye data and the challenge-decision model.

Interactive heatmaps of where umpires miss — zoom in and the density resolves into individual pitches.

League-wide: challenge & overturn rates by distance and count, and how volume and the umpire zone have moved over the season.

Search any catcher for their page — success rate and run value over time, and where in the zone they read calls best.

Perception sharpness (sigma) by catcher: who can tell a ball from a strike at the margin.

Per-umpire miss rates by zone region, and how often each is challenged and overturned.

Net challenge value in runs and wins, wasted-challenge cost, and unchallenged misses.

Set count, inning, score, runners, and catcher — get the confidence needed to challenge.