Sean Barber
With Sean Barber behind the plate, MLB games average 9.38 total runs versus a league average of 9.02. That is a run factor of 1.07, #16 of 96 umpires for scoring, making him a hitter's umpire, one of the most run-friendly zones in the league.
A strikeout factor of 1.0 (+0%) reflects how wide or tight Sean Barber calls the zone. A wider zone means more called strikes, more strikeouts, and fewer baserunners, which is why umpire run and strikeout factors usually move together. The home team wins 54.5% of his games, close to the league's modest home rate.
From 88 games with Sean Barber as home-plate umpire, rebuilt nightly. Factors are normalized so 1.00 equals the league-average umpire. A single umpire is a small slice of the season, so read the extremes as tendencies, not certainties. Descriptive, not a prediction.
Last recomputed August 23, 2026.