Blue Notes · Umpire Grade2026-06-12
ATL @ NYM
Home plate: John Bacon
“Pitchers found a little extra real estate.”
Umpire Grade
94.2% accurate
Run Favor
runs, NYM
ABS Overturns
of 4 reviewed
What this shows — how John Bacon called the 171 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 161 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
- 1-0.21▲2 · 3-0 ball called strike
Mauricio Dubón vs Nolan McLean - 2-0.20▲8 · 2-1 ball called strike
Jorge Mateo vs Brooks Raley - 3-0.13▲4 · 1-0 ball called strike
Austin Riley vs Nolan McLean
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 · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Austin Wynns — ump said strike, robot ruled ball: overturned.
- 2Austin Wynns — ump said strike, robot ruled ball: overturned.
- 3Ozzie Albies — ump said ball, robot ruled strike: overturned.
- 4Austin Wynns — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.