Blue Notes · Umpire Grade2026-05-01
“A steady night's work behind the plate.”
Umpire Grade
94.2% accurate
Run Favor
runs, PIT
ABS Overturns
of 5 reviewed
What this shows — how Jim Wolf called the 171 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 161 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+0.28▼4 · 1-2 strike called ball
Bryan Reynolds vs Zach Maxwell - 2-0.28▼8 · 1-2 ball called strike
Marcell Ozuna vs Jose Trevino - 3-0.19▲9 · 2-0 ball called strike
Rece Hinds vs Evan Sisk
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 · 3 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Tyler Stephenson — ump said ball, robot ruled strike: overturned.
- 2Henry Davis — ump said ball, robot ruled ball: upheld.
- 3Tyler Stephenson — ump said ball, robot ruled strike: overturned.
- 4Tyler Stephenson — ump said ball, robot ruled ball: upheld.
- 5Bryan Reynolds — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.