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Blue Notes · Umpire Grade2026-06-18

STL @ KC

Home plate: Ryan Blakney

“The Automated Ball-Strike System put in some overtime here.”

B-
Umpire Grade
91.3% accurate
1.0
Run Favor
runs, STL
5
ABS Overturns
of 7 reviewed

What this shows — how Ryan Blakney called the 185 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 169 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: Salvador Perez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Nelson Velázquez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Salvador Perez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Pedro Pagés — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Michael Massey — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Tyler Tolbert — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Salvador Perez — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).7
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▲3 · 2-2 strike called ball· challenged ✓
    Masyn Winn vs Noah Cameron
  2. 2-0.39▼5 · 2-2 ball called strike
    Tyler Tolbert vs Max Rajcic
  3. 3+0.30▲7 · 3-1 strike called ball· challenged ✓
    JJ Wetherholt vs Mason Black

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

7 pitches went to the robots · 5 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Salvador Perez — ump said ball, robot ruled strike: overturned.
  2. 2Nelson Velázquez — ump said strike, robot ruled ball: overturned.
  3. 3Salvador Perez — ump said ball, robot ruled strike: overturned.
  4. 4Pedro Pagés — ump said ball, robot ruled strike: overturned.
  5. 5Michael Massey — ump said strike, robot ruled ball: overturned.
  6. 6Tyler Tolbert — ump said strike, robot ruled strike: upheld.
  7. 7Salvador Perez — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 7 of 7 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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