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Blue Notes · Umpire Grade2026-06-23

CHC @ NYM

Home plate: Junior Valentine

“Somebody's pitching staff sent a thank-you note.”

A
Umpire Grade
97.0% accurate
1.0
Run Favor
runs, CHC
4
ABS Overturns
of 6 reviewed

What this shows — how Junior Valentine called the 199 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 193 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: Francisco Alvarez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Francisco Alvarez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Mark Vientos — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Francisco Alvarez — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Carson Kelly — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Francisco Alvarez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▲5 · 3-2 strike called ball· challenged ✓
    Seiya Suzuki vs Cionel Pérez
  2. 2-0.23▼5 · 0-2 ball called strike· challenged ✓
    Mark Vientos vs Edward Cabrera
  3. 3-0.19▼9 · 2-0 ball called strike
    Francisco Alvarez vs Jayden Murray

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

6 pitches went to the robots · 4 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Francisco Alvarez — ump said ball, robot ruled strike: overturned.
  2. 2Francisco Alvarez — ump said ball, robot ruled strike: overturned.
  3. 3Mark Vientos — ump said strike, robot ruled ball: overturned.
  4. 4Francisco Alvarez — ump said ball, robot ruled ball: upheld.
  5. 5Carson Kelly — ump said ball, robot ruled ball: upheld.
  6. 6Francisco Alvarez — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 5 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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