Blue Notes · Umpire Grade2026-04-08
AZ @ NYM
Home plate: Chris Segal
“Pitchers found a little extra real estate.”
Umpire Grade
93.1% accurate
Run Favor
runs, NYM
ABS Overturns
of 4 reviewed
What this shows — how Chris Segal called the 145 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 135 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+0.39▼5 · 2-2 strike called ball
Carson Benge vs Ryne Nelson - 2-0.13▲1 · 1-1 ball called strike
Ketel Marte vs David Peterson - 3-0.09▼2 · 0-0 ball called strike
Mark Vientos vs Ryne Nelson
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 · 4 overturned (ump overruled) · 0 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Gabriel Moreno — ump said strike, robot ruled ball: overturned.
- 2Gabriel Moreno — ump said strike, robot ruled ball: overturned.
- 3Gabriel Moreno — ump said strike, robot ruled ball: overturned.
- 4Marcus Semien — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 0 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.