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Blue Notes · Umpire Grade2026-09-04

LAA @ PIT

Home plate: Tyler Jones

“Squeezed the edges; the hitters didn't mind at all.”

B
Umpire Grade
92.2% accurate
0.6
Run Favor
runs, PIT
4
ABS Overturns
of 8 reviewed

What this shows — how Tyler Jones called the 141 pitches that were taken (no swing), graded against the tracked rulebook strike zone, or, on a pitch the ABS (Automated Ball-Strike System) reviewed on a challenge, against its ruling. 130 were right. Below, only the misses are plotted, alongside every challenged pitch.

The zone, as he called it

Challenge 1: Moisés Ballesteros — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Spencer Horwitz — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Moisés Ballesteros — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Henry Davis — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Tyler Heineman — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Mike Trout — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6Challenge 7: Henry Davis — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).7Challenge 8: Travis d'Arnaud — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).8
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▼5 · 3-2 strike called ball· challenged ✓
    Brandon Lowe vs Ryan Johnson
  2. 2-0.39▲9 · 2-2 ball called strike· challenged ✓
    Mike Trout vs Mason Montgomery
  3. 3-0.30▼1 · 3-1 ball called strike
    Nick Gonzales vs Ryan Johnson

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

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

  1. 1Moisés Ballesteros — ump said ball, robot ruled strike: overturned.
  2. 2Spencer Horwitz — ump said strike, robot ruled strike: upheld.
  3. 3Moisés Ballesteros — ump said ball, robot ruled strike: overturned.
  4. 4Henry Davis — ump said ball, robot ruled strike: overturned.
  5. 5Tyler Heineman — ump said ball, robot ruled ball: upheld.
  6. 6Mike Trout — ump said strike, robot ruled ball: overturned.
  7. 7Henry Davis — ump said ball, robot ruled ball: upheld.
  8. 8Travis d'Arnaud — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 8 of 8 — a zone-definition gap (ABS grades a standardized, height-based zone). Where the two disagree, the umpire is graded on the ABS ruling.

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