Blue Notes · Umpire Grade2026-09-30
“Solid and unspectacular — exactly what the job asks.”
Umpire Grade
97.1% accurate
Run Favor
runs, CWS
ABS Overturns
of 6 reviewed
What this shows — how Alex Tosi called the 172 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 167 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
- 1-0.39▼9 · 2-2 ball called strike· challenged ✓
Lucas Spence vs Erick Fedde - 2+0.28▲3 · 1-2 strike called ball
Chase Meidroth vs Peter Lambert - 3+0.10▲1 · 0-1 strike called ball
Chase Meidroth vs Hunter Brown
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
6 pitches went to the robots · 3 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Kyle Teel — ump said ball, robot ruled strike: overturned.
- 2Kyle Teel — ump said ball, robot ruled strike: overturned.
- 3Yainer Diaz — ump said ball, robot ruled ball: upheld.
- 4Miguel Vargas — ump said strike, robot ruled strike: upheld.
- 5Munetaka Murakami — ump said strike, robot ruled strike: upheld.
- 6Lucas Spence — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 5 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.