Blue Notes · Umpire Grade2026-05-18
CLE @ DET
Home plate: Tom Hanahan
“A steady night's work behind the plate.”
Umpire Grade
94.0% accurate
Run Favor
runs, CLE
ABS Overturns
of 4 reviewed
What this shows — how Tom Hanahan called the 167 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 157 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+0.28▲8 · 1-2 strike called ball· challenged
Austin Hedges vs Connor Seabold - 2-0.21▲6 · 3-0 ball called strike
Steven Kwan vs Brant Hurter - 3-0.21▼9 · 3-0 ball called strike
Kevin McGonigle vs Peyton Pallette
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 · 2 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Dillon Dingler — ump said strike, robot ruled ball: overturned.
- 2Dillon Dingler — ump said ball, robot ruled ball: upheld.
- 3Dillon Dingler — ump said strike, robot ruled ball: overturned.
- 4Austin Hedges — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 2 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.