Blue Notes · Umpire Grade2026-04-15
SF @ CIN
Home plate: Quinn Wolcott
“A steady night's work behind the plate.”
Umpire Grade
94.2% accurate
Run Favor
runs, SF
ABS Overturns
of 4 reviewed
What this shows — how Quinn Wolcott called the 154 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 145 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.
The zone, as he called it
strike called ballball called strikeABS overturnedABS upheld
The calls that moved the game
- 1+0.20▲1 · 2-1 strike called ball
Casey Schmitt vs Rhett Lowder - 2-0.20▼4 · 2-1 ball called strike
Matt McLain vs Tyler Mahle - 3+0.19▼2 · 2-0 strike called ball
Ke'Bryan Hayes vs Tyler Mahle
Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.
ABS — the Automated Ball-Strike System
4 pitches went to the robots · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Daniel Susac — ump said strike, robot ruled ball: overturned.
- 2Heliot Ramos — ump said strike, robot ruled strike: upheld.
- 3Casey Schmitt — ump said ball, robot ruled strike: overturned.
- 4Tyler Stephenson — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.