Blue Notes · Umpire Grade2026-05-18
LAD @ SD
Home plate: Nate Tomlinson
“An honest evening's grade: nothing loud, nothing missed by much.”
Umpire Grade
95.8% accurate
Run Favor
runs, SD
ABS Overturns
of 5 reviewed
What this shows — how Nate Tomlinson called the 142 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 136 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▼5 · 3-0 ball called strike
Ramón Laureano vs Yoshinobu Yamamoto - 2-0.20▲2 · 2-1 ball called strike
Kyle Tucker vs Michael King - 3-0.13▲1 · 1-0 ball called strike
Shohei Ohtani vs Michael King
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 Hawkeye ground truth, no model involved.
- 1Rodolfo Durán — ump said strike, robot ruled ball: overturned.
- 2Rodolfo Durán — ump said strike, robot ruled ball: overturned.
- 3Kyle Tucker — ump said strike, robot ruled strike: upheld.
- 4Freddie Freeman — ump said ball, robot ruled strike: overturned.
- 5Rodolfo Durán — ump said strike, robot ruled ball: overturned.
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.