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Blue Notes · Umpire Grade2026-09-21

MIN @ SF

Home plate: Andy Fletcher

“ABS had a long evening on this one.”

B+
Umpire Grade
93.2% accurate
0.3
Run Favor
runs, MIN
5
ABS Overturns
of 7 reviewed

What this shows — how Andy Fletcher called the 146 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 136 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: Ryan Jeffers — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Luke Keaschall — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Ryan Jeffers — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Ryan Jeffers — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Christian Koss — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Luke Keaschall — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Andrew Knizner — 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+0.30▼3 · 3-1 strike called ball· challenged ✓
    Marcelo Mayer vs Zebby Matthews
  2. 2+0.23▲5 · 0-2 strike called ball
    Emmanuel Rodriguez vs Tristan Beck
  3. 3+0.13▼2 · 1-1 strike called ball· challenged ✓
    Scott Bandura vs Zebby Matthews

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. 1Ryan Jeffers — ump said ball, robot ruled strike: overturned.
  2. 2Luke Keaschall — ump said strike, robot ruled ball: overturned.
  3. 3Ryan Jeffers — ump said ball, robot ruled strike: overturned.
  4. 4Ryan Jeffers — ump said ball, robot ruled strike: overturned.
  5. 5Christian Koss — ump said strike, robot ruled ball: overturned.
  6. 6Luke Keaschall — ump said strike, robot ruled strike: upheld.
  7. 7Andrew Knizner — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 5 of 7 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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