Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-11

LAA @ WSH

Home plate: Clint Vondrak

“The kind of night where the umpire is the least of the story.”

A-
Umpire Grade
94.7% accurate
0.8
Run Favor
runs, WSH
2
ABS Overturns
of 2 reviewed

What this shows — how Clint Vondrak called the 152 pitches that were taken (no swing), graded against the tracked rulebook strike zone, or, on a pitch the ABS (Automated Ball-Strike System) reviewed on a challenge, against its ruling. 144 were right. Below, only the misses are plotted, alongside every challenged pitch.

The zone, as he called it

Challenge 1: Moisés Ballesteros — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Brady House — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled). Our tracking puts it on the other side of the line; the grade follows the ruling.2*
strike called ballball called strikeABS overturnedABS upheld

* Graded on the ABS ruling. ABS measures its own zone, set by the batter’s height and taken at the middle of the plate, and our tracking puts this pitch on the other side of the line.

The calls that moved the game

  1. 1+0.39▼6 · 2-2 strike called ball
    Jorbit Vivas vs José Fermin
  2. 2-0.28▲5 · 1-2 ball called strike
    Christian Moore vs Cade Cavalli
  3. 3-0.23▼8 · 0-2 ball called strike· challenged ✓
    Brady House vs Samy Natera Jr.

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 · 2 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Moisés Ballesteros — ump said ball, robot ruled strike: overturned.
  2. 2Brady House — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 1 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone). Where the two disagree, the umpire is graded on the ABS ruling.

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