Blue Notes · Umpire Grade2026-08-27
“Reliable as a Tuesday: no complaints, no headlines.”
Umpire Grade
93.7% accurate
Run Favor
runs, BAL
ABS Overturns
of 6 reviewed
What this shows — how Alex Tosi called the 158 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 148 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+0.23▲4 · 0-2 strike called ball
Pete Alonso vs Justin Bruihl - 2-0.20▼1 · 2-1 ball called strike
Jordan Walker vs Trevor Rogers - 3-0.13▼2 · 1-0 ball called strike
Nathan Church vs Trevor Rogers
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.
- 1Gunnar Henderson — ump said strike, robot ruled strike: upheld.
- 2José Fermín — ump said strike, robot ruled strike: upheld.
- 3Samuel Basallo — ump said strike, robot ruled ball: overturned.
- 4Samuel Basallo — ump said strike, robot ruled ball: overturned.
- 5Samuel Basallo — ump said ball, robot ruled strike: overturned.
- 6Dylan Beavers — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 3 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.