Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-05

MIA @ ATL

Home plate: Clint Vondrak

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

B+
Umpire Grade
93.9% accurate
0.2
Run Favor
runs, MIA
1
ABS Overturns
of 2 reviewed

What this shows — how Clint Vondrak called the 115 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 108 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

Challenge 1: Joe Mack — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Ronald Acuña Jr. — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▲5 · 3-2 strike called ball
    Owen Caissie vs Bryce Elder
  2. 2+0.20▼3 · 2-1 strike called ball· challenged ✓
    Lane Thomas vs Eury Pérez
  3. 3-0.13▼7 · 1-1 ball called strike
    Ozzie Albies vs Cade Gibson

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 · 1 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Joe Mack — ump said ball, robot ruled strike: overturned.
  2. 2Ronald Acuña Jr. — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 2 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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