Blue Notes · Umpire Grade2026-08-18
“The zone kept its promises.”
Umpire Grade
96.8% accurate
Run Favor
runs, SD
ABS Overturns
of 5 reviewed
What this shows — how Laz Diaz called the 154 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 149 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
- 1-0.20▼1 · 2-1 ball called strike
Francisco Lindor vs Robbie Ray - 2+0.13▲1 · 1-1 strike called ball
Ty France vs Zac Thornton - 3+0.13▼1 · 1-0 strike called ball
Bo Bichette vs Robbie Ray
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
5 pitches went to the robots · 4 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Christopher Morel — ump said ball, robot ruled strike: overturned.
- 2A.J. Ewing — ump said ball, robot ruled strike: overturned.
- 3Fernando Tatis Jr. — ump said ball, robot ruled strike: overturned.
- 4Zac Thornton — ump said strike, robot ruled ball: overturned.
- 5Manny Machado — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.