Blue Notes · Umpire Grade2026-04-12
CLE @ ATL
Home plate: John Tumpane
“Solid and unspectacular — exactly what the job asks.”
Umpire Grade
92.6% accurate
Run Favor
runs, CLE
ABS Overturns
of 3 reviewed
What this shows — how John Tumpane called the 149 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 138 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▲3 · 3-2 strike called ball
Chase DeLauter vs Chris Sale - 2-0.20▼1 · 2-1 ball called strike
Austin Riley vs Tanner Bibee - 3+0.19▼5 · 2-0 strike called ball
Drake Baldwin vs Tanner Bibee
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
3 pitches went to the robots · 0 overturned (ump overruled) · 3 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Jorge Mateo — ump said strike, robot ruled strike: upheld.
- 2Drake Baldwin — ump said ball, robot ruled ball: upheld.
- 3David Fry — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 3 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.