Blue Notes · Umpire Grade2026-05-07
“The zone shrank when the pitchers needed it most.”
Umpire Grade
91.9% accurate
Run Favor
runs, STL
ABS Overturns
of 2 reviewed
What this shows — how Alex Tosi called the 124 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 114 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+0.30▲1 · 3-1 strike called ball
Alec Burleson vs Michael King - 2+0.23▼8 · 0-2 strike called ball· challenged ✓
Nick Castellanos vs JoJo Romero - 3+0.21▼5 · 3-0 strike called ball
Ramón Laureano vs Matthew Liberatore
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
2 pitches went to the robots · 1 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Ramón Laureano — ump said strike, robot ruled strike: upheld.
- 2Pedro Pagés — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.