Blue Notes · Umpire Grade2026-05-23
PIT @ TOR
Home plate: Alan Porter
“Off the corner was close enough tonight.”
Umpire Grade
93.1% accurate
Run Favor
runs, PIT
ABS Overturns
of 3 reviewed
What this shows — how Alan Porter called the 130 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 121 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▲8 · 3-2 strike called ball· challenged
Bryan Reynolds vs Yariel Rodríguez - 2-0.23▲7 · 0-2 ball called strike
Oneil Cruz vs Braydon Fisher - 3+0.13▼1 · 1-1 strike called ball
Vladimir Guerrero Jr. vs Paul Skenes
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 · 2 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Henry Davis — ump said strike, robot ruled ball: overturned.
- 2Tyler Heineman — ump said strike, robot ruled ball: overturned.
- 3Tyler Heineman — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.