Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-06-13

HOU @ KC

Home plate: Nate Tomlinson

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

A
Umpire Grade
95.6% accurate
0.2
Run Favor
runs, KC
3
ABS Overturns
of 6 reviewed

What this shows — how Nate Tomlinson called the 159 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 152 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: Christian Vázquez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Maikel Garcia — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Jose Altuve — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Carter Jensen — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Christian Vázquez — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Christian Walker — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.194 · 2-0 strike called ball· challenged
    Jose Altuve vs Noah Cameron
  2. 2+0.196 · 2-0 strike called ball· challenged
    Lane Thomas vs Enyel De Los Santos
  3. 3-0.197 · 2-0 ball called strike· challenged
    Christian Walker vs Daniel Lynch IV

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

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

  1. 1Christian Vázquez — ump said ball, robot ruled strike: overturned.
  2. 2Maikel Garcia — ump said strike, robot ruled strike: upheld.
  3. 3Jose Altuve — ump said strike, robot ruled ball: overturned.
  4. 4Carter Jensen — ump said ball, robot ruled ball: upheld.
  5. 5Christian Vázquez — ump said ball, robot ruled ball: upheld.
  6. 6Christian Walker — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 4 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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