Blue Notes · Umpire Grade2026-04-30
“Called a fair game and let the players decide it.”
Umpire Grade
93.1% accurate
Run Favor
runs, HOU
ABS Overturns
of 4 reviewed
What this shows — how Rob Drake called the 159 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 148 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▼4 · 2-2 ball called strike
Dylan Beavers vs Peter Lambert - 2-0.21▼4 · 3-0 ball called strike
Pete Alonso vs Peter Lambert - 3-0.19▲2 · 2-0 ball called strike
Yainer Diaz vs Chris Bassitt
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.
- 1Adley Rutschman — ump said strike, robot ruled ball: overturned.
- 2Jose Altuve — ump said ball, robot ruled strike: overturned.
- 3Blaze Alexander — ump said ball, robot ruled strike: overturned.
- 4Christian Vázquez — 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.