Blue Notes · Umpire Grade2026-04-10
CLE @ ATL
Home plate: Dexter Kelley
“Corner-to-corner and then some.”
Umpire Grade
92.5% accurate
Run Favor
runs, CLE
ABS Overturns
of 5 reviewed
What this shows — how Dexter Kelley called the 161 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 149 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▼4 · 3-2 strike called ball
Austin Riley vs Slade Cecconi - 2-0.21▼7 · 3-0 ball called strike
Ozzie Albies vs Peyton Pallette - 3+0.21▲9 · 3-0 strike called ball· challenged
Steven Kwan vs Osvaldo Bido
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
5 pitches went to the robots · 1 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Chase DeLauter — ump said ball, robot ruled strike: overturned.
- 2Drake Baldwin — ump said ball, robot ruled ball: upheld.
- 3Steven Kwan — ump said strike, robot ruled strike: upheld.
- 4David Fry — ump said ball, robot ruled ball: upheld.
- 5Osvaldo Bido — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 4 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.