Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-02

KC @ SEA

Home plate: Tripp Gibson

Nothing that'll trend, and on this beat that's a compliment.

A
Umpire Grade
95.4% accurate
0.1
Run Favor
runs, SEA
3
ABS Overturns
of 5 reviewed

What this shows — how Tripp Gibson called the 130 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 124 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: Josh Naylor — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Josh Naylor — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Vinnie Pasquantino — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3Challenge 4: Carter Jensen — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Maikel Garcia — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.233 · 0-2 ball called strike· challenged
    Josh Naylor vs Seth Lugo
  2. 2-0.137 · 1-1 ball called strike
    Michael Massey vs Emerson Hancock
  3. 3+0.135 · 1-0 strike called ball
    Randy Arozarena vs Seth Lugo

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

  1. 1Josh Naylor — ump said strike, robot ruled strike: upheld.
  2. 2Josh Naylor — ump said strike, robot ruled ball: overturned.
  3. 3Vinnie Pasquantino — ump said strike, robot ruled strike: upheld.
  4. 4Carter Jensen — ump said ball, robot ruled strike: overturned.
  5. 5Maikel Garcia — ump said strike, robot ruled ball: 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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