MLB · 11,638 games logged

MLB Umpires: what really happens in their games

Download CSV (CC BY) — the whole table as a spreadsheet, free to use with credit.

Across 11,638 logged MLB games, the biggest scoring gap between umpires is real: games with Pat Hoberg average 10.9 runs, games with Brian Knight just 7.5 — against a league average of 9.1. Every umpire below links to their full record.

"Small sample" means we don't have enough of that umpire's games yet to publish a full page — the row still shows what we do have. Averages update as new games are logged. Last build: 2026-10-21 18:33 UTC.

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Common questions

Do MLB umpires really affect the score?

The numbers on this page are real averages from logged games, shown next to the league average so you can see the gap. Some of the gap is the umpire, some is the games they happen to get. Treat it as one more thing to check — not a system on its own.

Where does this data come from?

Official game records: final scores, pitch-by-pitch accuracy tracking for every logged game each umpire worked. We only publish a full page for umpires with enough games to be meaningful.

How do bettors use umpire stats?

Mostly for totals. If a umpire's games run clearly above or below the league average, that's worth knowing before you take an over or under. Check the number, then check the price.