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RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-06-19

BOS @ SEA

Home plate: Steven Jaschinski

“Solid and unspectacular — exactly what the job asks.”

A
Umpire Grade
96.1% accurate
0.9
Run Favor
runs, BOS
4
ABS Overturns
of 5 reviewed

What this shows — how Steven Jaschinski called the 127 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 122 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: Carlos Narváez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Carlos Narváez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Carlos Narváez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Marcelo Mayer — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Cole Young — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.39▼1 · 2-2 ball called strike
    Julio Rodríguez vs Ranger Suarez
  2. 2+0.23▲4 · 0-2 strike called ball
    Ceddanne Rafaela vs Bryce Miller
  3. 3+0.13▲7 · 1-1 strike called ball· challenged ✓
    Marcelo Mayer vs Luis Castillo

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

5 pitches went to the robots · 4 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Carlos Narváez — ump said strike, robot ruled ball: overturned.
  2. 2Carlos Narváez — ump said strike, robot ruled ball: overturned.
  3. 3Carlos Narváez — ump said strike, robot ruled ball: overturned.
  4. 4Marcelo Mayer — ump said ball, robot ruled strike: overturned.
  5. 5Cole Young — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.