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Blue Notes · Umpire Grade2026-09-02

DET @ MIN

Home plate: Dan Iassogna

“ABS had a long evening on this one.”

C+
Umpire Grade
90.8% accurate
0.2
Run Favor
runs, DET
6
ABS Overturns
of 10 reviewed

What this shows — how Dan Iassogna called the 195 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 177 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: Walker Jenkins — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Ryan Jeffers — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Ryan Jeffers — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Drew Anderson — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Spencer Torkelson — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).5Challenge 6: Kaelen Culpepper — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Ryan Jeffers — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).7Challenge 8: Ben Malgeri — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).8Challenge 9: Ryan Jeffers — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).9Challenge 10: Eduardo Valencia — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).10
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.28▼3 · 1-2 ball called strike· challenged ✓
    Walker Jenkins vs Drew Anderson
  2. 2-0.28▲12 · 1-2 ball called strike· challenged ✓
    Ben Malgeri vs Tommy Nance
  3. 3+0.13▲1 · 1-1 strike called ball
    Colt Keith vs Dean Kremer

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

10 pitches went to the robots · 6 overturned (ump overruled) · 4 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Walker Jenkins — ump said strike, robot ruled ball: overturned.
  2. 2Ryan Jeffers — ump said ball, robot ruled strike: overturned.
  3. 3Ryan Jeffers — ump said strike, robot ruled ball: overturned.
  4. 4Drew Anderson — ump said ball, robot ruled strike: overturned.
  5. 5Spencer Torkelson — ump said strike, robot ruled strike: upheld.
  6. 6Kaelen Culpepper — ump said strike, robot ruled strike: upheld.
  7. 7Ryan Jeffers — ump said ball, robot ruled ball: upheld.
  8. 8Ben Malgeri — ump said strike, robot ruled ball: overturned.
  9. 9Ryan Jeffers — ump said ball, robot ruled strike: overturned.
  10. 10Eduardo Valencia — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 9 of 10 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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