Blue Notes · Umpire Grade2026-05-15
BAL @ WSH
Home plate: John Tumpane
“The grade leaned — the ledger says which way.”
Umpire Grade
94.7% accurate
Run Favor
runs, BAL
ABS Overturns
of 2 reviewed
What this shows — how John Tumpane called the 151 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 143 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
- 1-0.69▼5 · 3-2 ball called strike
James Wood vs Shane Baz - 2-0.30▲8 · 3-1 ball called strike
Adley Rutschman vs Andrew Alvarez - 3+0.30▲9 · 3-1 strike called ball· challenged
Taylor Ward vs Richard Lovelady
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 · 0 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Adley Rutschman — ump said ball, robot ruled ball: upheld.
- 2Drew Millas — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.