Blue Notes · Umpire Grade2026-04-23
ATL @ WSH
Home plate: Chris Segal
“A few too many trips to the challenge cart.”
Umpire Grade
95.6% accurate
Run Favor
runs, WSH
ABS Overturns
of 6 reviewed
What this shows — how Chris Segal called the 137 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 131 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+0.13▼5 · 1-0 strike called ball
James Wood vs JR Ritchie - 2-0.09▲5 · 0-0 ball called strike
Ronald Acuña Jr. vs Cade Cavalli - 3-0.09▲7 · 0-0 ball called strike
Ronald Acuña Jr. vs Cionel Pérez
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 · 5 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Drake Baldwin — ump said strike, robot ruled ball: overturned.
- 2Drake Baldwin — ump said strike, robot ruled ball: overturned.
- 3Keibert Ruiz — ump said strike, robot ruled ball: overturned.
- 4James Wood — ump said strike, robot ruled strike: upheld.
- 5Drake Baldwin — ump said strike, robot ruled ball: overturned.
- 6Drake Baldwin — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.