HOME PLATE UMPIRE
Mark Ripperger
Slightly tight zone
43% NRFI
7 games tracked
Career Averages
0.960
Zone Factor
17
K / Game
8
BB / Game
43%
NRFI Rate
Betting Implications
Slightly tighter zone (0.960x). Small lean toward hitter-friendly outcomes.
Season Breakdown
| Season | Games | Zone | K/G | BB/G | NRFI% | K Factor |
|---|---|---|---|---|---|---|
| 2026 | 7 | 0.960 | 17 | 8 | 43% | 1.014 |
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%.