Blue Notes · Umpire Grade2026-05-24
CWS @ SF
Home plate: Chris Guccione
“A small strike zone, generously enforced for the offense.”
Umpire Grade
93.0% accurate
Run Favor
runs, SF
ABS Overturns
of 8 reviewed
What this shows — how Chris Guccione called the 158 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 147 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+0.30▲3 · 3-1 strike called ball
Miguel Vargas vs Robbie Ray - 2+0.20▼1 · 2-1 strike called ball
Willy Adames vs Noah Schultz - 3+0.20▲5 · 2-1 strike called ball
Sam Antonacci vs Keaton Winn
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
8 pitches went to the robots · 4 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Jarred Kelenic — ump said ball, robot ruled strike: overturned.
- 2Daniel Susac — ump said strike, robot ruled ball: overturned.
- 3Casey Schmitt — ump said ball, robot ruled strike: overturned.
- 4Matt Chapman — ump said strike, robot ruled strike: upheld.
- 5Edgar Quero — ump said ball, robot ruled ball: upheld.
- 6Edgar Quero — ump said strike, robot ruled ball: overturned.
- 7Edgar Quero — ump said ball, robot ruled ball: upheld.
- 8Casey Schmitt — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 4 of 8 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.