Stephen Williams

← All umpires (2026)

4
Games
602
Called Pitches
90.53%
Accuracy
65.85%
Consistency (123 shadow-zone)
-0.62
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 (2026-06-18 – 2026-07-28)
91.16% 89.92%
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).

4/19 missed (21%) 4/15 missed (27%) 0/15 missed (0%) 0/15 missed (0%) 0/9 missed (0%) 4/9 missed (44%) 0/18 missed (0%) 0/13 missed (0%) 0/6 missed (0%) 3/13 missed (23%) 1/12 missed (8%) 7/16 missed (44%) 4/15 missed (27%) 0/12 missed (0%) 5/13 missed (38%) 0/9 missed (0%) 1/12 missed (8%) 0/14 missed (0%) 1/14 missed (7%) 3/17 missed (18%) 0/13 missed (0%) 5/18 missed (28%) 0/18 missed (0%) 3/17 missed (18%) 0/18 missed (0%) 0/5 missed (0%) 0/15 missed (0%) 0/3 missed (0%) 0/6 missed (0%) 0/14 missed (0%) 0/10 missed (0%) 1/14 missed (7%) 0/7 missed (0%) 0/12 missed (0%) 4/15 missed (27%) 2/16 missed (12%) 1/9 missed (11%) 0/6 missed (0%) 0/8 missed (0%) 0/5 missed (0%) 0/10 missed (0%) 2/7 missed (29%) 0/3 missed (0%) 0/2 missed (0%) 0/5 missed (0%) 0/6 missed (0%) 0/13 missed (0%) 0/6 missed (0%) 0/4 missed (0%) 0/2 missed (0%) 0/10 missed (0%) 0/6 missed (0%) 0/3 missed (0%) 0/5 missed (0%) 2/8 missed (25%) 0/5 missed (0%) 0/2 missed (0%) 0/6 missed (0%)
Miss rate: 0% 100%
Game Log
Date Matchup Called Pitches Correct Accuracy% Missed Strikes Missed Balls Graced Consistency% Favor (Home) Zone Chart
2026-06-18 Hyannis Harbor Hawks @ Brewster Whitecaps 119 107 89.92% 2 10 12 65.22% +0.07 View →
2026-06-24 Hyannis Harbor Hawks @ Orleans Firebirds 159 144 90.57% 5 10 10 65.52% +0.44 View →
2026-07-01 Hyannis Harbor Hawks @ Bourne Braves 177 160 90.4% 1 16 9 68.29% -1.03 View →
2026-07-28 Yarmouth-Dennis Red Sox @ Harwich Mariners 147 134 91.16% 2 11 9 63.33% -0.10 View →