Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-29

SD @ WSH

Home plate: Mark Ripperger

A steady night's work behind the plate.

B-
Umpire Grade
91.9% accurate
0.8
Run Favor
runs, SD
1
ABS Overturns
of 3 reviewed

What this shows — how Mark Ripperger called the 186 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 171 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: Keibert Ruiz — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Freddy Fermin — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Keibert Ruiz — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.692 · 3-2 strike called ball
    Ramón Laureano vs Andrew Alvarez
  2. 2+0.287 · 1-2 strike called ball· challenged
    CJ Abrams vs Adrian Morejon
  3. 3-0.194 · 2-0 ball called strike
    Ty France vs Andrew Alvarez

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

3 pitches went to the robots · 1 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Keibert Ruiz — ump said ball, robot ruled ball: upheld.
  2. 2Freddy Fermin — ump said ball, robot ruled strike: overturned.
  3. 3Keibert Ruiz — ump said ball, robot ruled ball: upheld.

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

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