Blue Notes · Umpire Grade2026-04-18
STL @ HOU
Home plate: Willie Traynor
“Called a fair game and let the players decide it.”
Umpire Grade
93.2% accurate
Run Favor
runs, HOU
ABS Overturns
of 2 reviewed
What this shows — how Willie Traynor called the 190 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 177 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▲2 · 3-1 ball called strike
José Fermín vs Lance McCullers Jr. - 2-0.28▲6 · 1-2 ball called strike
JJ Wetherholt vs Colton Gordon - 3-0.28▼7 · 1-2 ball called strike
Shay Whitcomb vs Gordon Graceffo
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
2 pitches went to the robots · 1 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Christian Vázquez — ump said ball, robot ruled ball: upheld.
- 2Iván Herrera — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 0 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.