Fever BaseballFuture Value Radar (FVR) · On the record
RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-04-29

STL @ PIT

Home plate: Laz Diaz

“Down the middle. Both dugouts had the same zone.”

B+
Umpire Grade
93.0% accurate
0.8
Run Favor
runs, STL
3
ABS Overturns
of 5 reviewed

What this shows — how Laz Diaz called the 172 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 160 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: Iván Herrera — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Iván Herrera — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Iván Herrera — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Iván Herrera — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Henry Davis — 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+0.69▲3 · 3-2 strike called ball· challenged ✓
    Iván Herrera vs Bubba Chandler
  2. 2+0.23▲3 · 0-2 strike called ball
    Ramón Urías vs Bubba Chandler
  3. 3-0.20▼6 · 2-1 ball called strike
    Bryan Reynolds vs Andre Pallante

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 Hawkeye ground truth, no model involved.

  1. 1Iván Herrera — ump said strike, robot ruled ball: overturned.
  2. 2Iván Herrera — ump said ball, robot ruled strike: overturned.
  3. 3Iván Herrera — ump said ball, robot ruled ball: upheld.
  4. 4Iván Herrera — ump said ball, robot ruled ball: upheld.
  5. 5Henry Davis — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 2 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.