Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-07-20

MIA @ HOU

Home plate: D.J. Reyburn

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

B+
Umpire Grade
93.3% accurate
0.2
Run Favor
runs, HOU
2
ABS Overturns
of 5 reviewed

What this shows — how D.J. Reyburn called the 150 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 140 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: Jose Altuve — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Heriberto Hernández — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Joe Mack — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Yainer Diaz — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Christian Walker — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.282 · 1-2 strike called ball
    Jakob Marsee vs Ronel Blanco
  2. 2-0.218 · 3-0 ball called strike
    Xavier Edwards vs Bryan Abreu
  3. 3-0.208 · 2-1 ball called strike
    Liam Hicks vs Bryan Abreu

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

  1. 1Jose Altuve — ump said strike, robot ruled strike: upheld.
  2. 2Heriberto Hernández — ump said strike, robot ruled strike: upheld.
  3. 3Joe Mack — ump said ball, robot ruled ball: upheld.
  4. 4Yainer Diaz — ump said strike, robot ruled ball: overturned.
  5. 5Christian Walker — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 4 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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