Jeff Mertzel

← All umpires (2026)

2
Games
242
Called Pitches
86.78%
Accuracy
56.0%
Consistency (50 shadow-zone)
+1.51
Favor (Home, runs)

Consistency is accuracy on "shadow zone" pitches only — the genuinely borderline calls near the edge of the zone. Favor is the net run-value impact (site's own pitch-level run-expectancy model) of this umpire's missed calls toward home teams across their games this season; positive favors the home team, negative favors visitors.

Accuracy trend (2026-06-30 – 2026-07-22)
87.22% 86.24%
Season Miss-Rate Heatmap

Miss rate by pitch location across every game this umpire worked in 2026, normalized to each batter's own strike zone (0 = bottom of their zone, 1 = top).

2/4 missed (50%) 0/2 missed (0%) 1/11 missed (9%) 0/7 missed (0%) 4/7 missed (57%) 0/3 missed (0%) 2/6 missed (33%) 0/10 missed (0%) 1/4 missed (25%) 0/7 missed (0%) 0/10 missed (0%) 1/4 missed (25%) 3/7 missed (43%) 2/8 missed (25%) 2/6 missed (33%) 0/4 missed (0%) 3/8 missed (38%) 0/5 missed (0%) 0/2 missed (0%) 1/8 missed (12%) 0/4 missed (0%) 0/5 missed (0%) 2/4 missed (50%) 0/7 missed (0%) 0/5 missed (0%) 0/6 missed (0%) 0/4 missed (0%) 3/8 missed (38%) 3/6 missed (50%) 0/5 missed (0%) 0/2 missed (0%) 0/3 missed (0%) 0/6 missed (0%) 0/6 missed (0%) 0/4 missed (0%) 0/9 missed (0%) 0/2 missed (0%) 0/2 missed (0%) 0/5 missed (0%) 2/4 missed (50%) 0/5 missed (0%) 0/3 missed (0%) 0/3 missed (0%) 0/3 missed (0%)
Miss rate: 0% 100%
Game Log
Date Matchup Called Pitches Correct Accuracy% Missed Strikes Missed Balls Graced Consistency% Favor (Home) Zone Chart
2026-06-30 Chatham Anglers @ Yarmouth-Dennis Red Sox 133 116 87.22% 3 14 9 47.62% +0.85 View →
2026-07-22 Harwich Mariners @ Orleans Firebirds 109 94 86.24% 2 13 9 62.07% +0.66 View →