HOME PLATE UMPIRE
Jim Wolf
Tight zone
40% NRFI
5 games tracked
Career Averages
0.853
Zone Factor
13.4
K / Game
8
BB / Game
40%
NRFI Rate
Betting Implications
Tight zone (0.853x) forces pitchers into the heart of the plate. Walk and hit props get a boost.
K factor of 0.800 means 20% fewer strikeouts than average. Be cautious with K over plays.
Low NRFI rate (40%). First innings tend to be scoring-heavy. Lean YRFI or fade NRFI plays.
Season Breakdown
| Season | Games | Zone | K/G | BB/G | NRFI% | K Factor |
|---|---|---|---|---|---|---|
| 2026 | 5 | 0.853 | 13.4 | 8 | 40% | 0.800 |
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%.