HOME PLATE UMPIRE
Mike Estabrook
Slightly wide zone
50% NRFI
8 games tracked
Career Averages
1.039
Zone Factor
16.5
K / Game
6.6
BB / Game
50%
NRFI Rate
Betting Implications
Slightly wider-than-average zone (1.039x). Modest advantage for pitchers on borderline pitches.
Season Breakdown
| Season | Games | Zone | K/G | BB/G | NRFI% | K Factor |
|---|---|---|---|---|---|---|
| 2026 | 8 | 1.039 | 16.5 | 6.6 | 50% | 0.985 |
Factor Definitions
Zone Size Factor: Strike zone width relative to league average (1.000). Higher = wider zone, favoring pitchers.
K Factor: Strikeout rate in this umpire's games vs league average. Higher = more Ks.
BB Factor: Walk rate adjustment. Higher = fewer walks (wider zone suppresses walks).
NRFI Rate: % of games with no runs in the first inning. League average is roughly 55%.