HOME PLATE UMPIRE
Alex MacKay
Average zone
33% NRFI
6 games tracked
Career Averages
0.986
Zone Factor
18.2
K / Game
8.2
BB / Game
33%
NRFI Rate
Betting Implications
Average-sized zone (0.986x). No significant umpire-driven lean in either direction.
K factor of 1.084 means games called by Alex MacKay produce 8% more strikeouts than league average. Consider bumping K over confidence.
Low NRFI rate (33%). 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 | 6 | 0.986 | 18.2 | 8.2 | 33% | 1.084 |
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%.