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Blue Notes · Umpire Grade2026-05-16

MIA @ TB

Home plate: Brock Ballou

“The robots earned their keep tonight.”

B-
Umpire Grade
91.0% accurate
0.7
Run Favor
runs, TB
7
ABS Overturns
of 11 reviewed

What this shows — how Brock Ballou called the 167 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: Joe Mack — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Kyle Stowers — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Hunter Feduccia — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Jonny DeLuca — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Taylor Walls — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Connor Norby — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6Challenge 7: Joe Mack — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).7Challenge 8: Joe Mack — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).8Challenge 9: Taylor Walls — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).9Challenge 10: Nick Fortes — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).10Challenge 11: Joe Mack — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).11
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▼9 · 2-2 strike called ball· challenged ✓
    Richie Palacios vs Pete Fairbanks
  2. 2+0.30▼2 · 3-1 strike called ball· challenged ✓
    Jonny DeLuca vs Sandy Alcantara
  3. 3-0.28▼5 · 1-2 ball called strike
    Jonny DeLuca vs Sandy Alcantara

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

11 pitches went to the robots · 7 overturned (ump overruled) · 4 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Joe Mack — ump said ball, robot ruled strike: overturned.
  2. 2Kyle Stowers — ump said strike, robot ruled ball: overturned.
  3. 3Hunter Feduccia — ump said strike, robot ruled ball: overturned.
  4. 4Jonny DeLuca — ump said strike, robot ruled strike: upheld.
  5. 5Taylor Walls — ump said strike, robot ruled ball: overturned.
  6. 6Connor Norby — ump said strike, robot ruled ball: overturned.
  7. 7Joe Mack — ump said ball, robot ruled strike: overturned.
  8. 8Joe Mack — ump said ball, robot ruled ball: upheld.
  9. 9Taylor Walls — ump said strike, robot ruled strike: upheld.
  10. 10Nick Fortes — ump said ball, robot ruled ball: upheld.
  11. 11Joe Mack — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 9 of 11 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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