Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-07-19

TB @ BOS

Home plate: Alfonso Márquez

“Down the middle. Both dugouts had the same zone.”

B+
Umpire Grade
93.9% accurate
0.0
Run Favor
runs, TB
2
ABS Overturns
of 4 reviewed

What this shows — how Alfonso Márquez called the 147 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. 138 were right. Below, only the misses are plotted, alongside every challenged pitch.

The zone, as he called it

Challenge 1: Victor Mesa Jr. — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Hunter Feduccia — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Caleb Durbin — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Connor Wong — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.28▼2 · 1-2 strike called ball
    Andruw Monasterio vs Shane McClanahan
  2. 2+0.28▲7 · 1-2 strike called ball· challenged ✓
    Jonathan Aranda vs Greg Weissert
  3. 3+0.20▼8 · 2-1 strike called ball
    Andruw Monasterio vs Chris Roycroft

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

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

  1. 1Victor Mesa Jr. — ump said strike, robot ruled strike: upheld.
  2. 2Hunter Feduccia — ump said ball, robot ruled ball: upheld.
  3. 3Caleb Durbin — ump said strike, robot ruled ball: overturned.
  4. 4Connor Wong — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 4 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone). Where the two disagree, the umpire is graded on the ABS ruling.

Paste the link anywhere — the card previews on its own. Or take it with you.

Post on X