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 Grade2026-05-03

HOU @ BOS

Home plate: Laz Diaz

“This one went to video review more than most.”

B-
Umpire Grade
91.7% accurate
1.3
Run Favor
runs, HOU
6
ABS Overturns
of 9 reviewed

What this shows — how Laz Diaz called the 181 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 166 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: Carlos Correa — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Christian Walker — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Cam Smith — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Ceddanne Rafaela — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Carlos Narváez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Brice Matthews — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Cam Smith — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).7Challenge 8: Carlos Narváez — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).8Challenge 9: Cam Smith — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).9
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.69▼2 · 3-2 ball called strike
    Marcelo Mayer vs Cody Bolton
  2. 2-0.20▲3 · 2-1 ball called strike
    Isaac Paredes vs Ranger Suarez
  3. 3+0.13▼1 · 1-0 strike called ball
    Jarren Duran vs Cody Bolton

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

9 pitches went to the robots · 6 overturned (ump overruled) · 3 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Carlos Correa — ump said ball, robot ruled strike: overturned.
  2. 2Christian Walker — ump said ball, robot ruled strike: overturned.
  3. 3Cam Smith — ump said ball, robot ruled strike: overturned.
  4. 4Ceddanne Rafaela — ump said strike, robot ruled strike: upheld.
  5. 5Carlos Narváez — ump said strike, robot ruled ball: overturned.
  6. 6Brice Matthews — ump said strike, robot ruled strike: upheld.
  7. 7Cam Smith — ump said ball, robot ruled strike: overturned.
  8. 8Carlos Narváez — ump said ball, robot ruled ball: upheld.
  9. 9Cam Smith — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 2 of 9 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.