Blue Notes · Umpire Grade2026-04-24
“The grade leaned — the ledger says which way.”
Umpire Grade
95.9% accurate
Run Favor
runs, KC
ABS Overturns
of 6 reviewed
What this shows — how Jim Wolf called the 146 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 140 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
- 1-0.69▲9 · 3-2 ball called strike· challenged ✓
Mike Trout vs Lucas Erceg - 2+0.39▼3 · 2-2 strike called ball
Nick Loftin vs Yusei Kikuchi - 3+0.23▼1 · 0-2 strike called ball
Bobby Witt Jr. vs Yusei Kikuchi
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.
- 1Lane Thomas — ump said strike, robot ruled ball: overturned.
- 2Logan O'Hoppe — ump said ball, robot ruled strike: overturned.
- 3Isaac Collins — ump said strike, robot ruled strike: upheld.
- 4Elias Díaz — ump said ball, robot ruled ball: upheld.
- 5Zach Neto — ump said strike, robot ruled strike: upheld.
- 6Mike Trout — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 6 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.