Explore

Poke at the numbers

Five surfaces, each fed by the season's Hawk-Eye data and the challenge-decision engine. Sort, filter, and dig in.

Heatmaps of where umpires miss, plus the overturn-rate-vs-distance curve that anchors the whole analysis.

A leaderboard of perception sharpness (sigma): which catchers can tell a ball from a strike at the margin.

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

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

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