Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-21

ATH @ HOU

Home plate: Jonathan Parra

Called a fair game and let the players decide it.

B+
Umpire Grade
93.3% accurate
0.8
Run Favor
runs, ATH
3
ABS Overturns
of 4 reviewed

What this shows — how Jonathan Parra called the 149 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 139 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: Jonah Heim — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Jonah Heim — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Yainer Diaz — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Christian Walker — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.281 · 1-2 ball called strike· challenged
    Daulton Varsho vs J.T. Ginn
  2. 2+0.233 · 0-2 strike called ball
    Donovan Walton vs Hayden Wesneski
  3. 3+0.193 · 2-0 strike called ball
    Jonah Heim vs Hayden Wesneski

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

4 pitches went to the robots · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Jonah Heim — ump said strike, robot ruled ball: overturned.
  2. 2Jonah Heim — ump said strike, robot ruled ball: overturned.
  3. 3Yainer Diaz — ump said strike, robot ruled ball: overturned.
  4. 4Christian Walker — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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