Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-19

ATL @ HOU

Home plate: Nic Lentz

“This one went to video review more than most.”

B+
Umpire Grade
93.7% accurate
0.6
Run Favor
runs, ATL
6
ABS Overturns
of 8 reviewed

What this shows — how Nic Lentz called the 143 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 134 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: Yainer Diaz — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Yainer Diaz — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Sean Murphy — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Yainer Diaz — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Ronald Acuña Jr. — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Sean Murphy — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).6Challenge 7: Sean Murphy — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).7Challenge 8: Yainer Diaz — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).8
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▲4 · 2-2 strike called ball· challenged ✓
    Mauricio Dubón vs Hayden Wesneski
  2. 2+0.39▲7 · 2-2 strike called ball
    Sean Murphy vs AJ Blubaugh
  3. 3-0.20▲6 · 2-1 ball called strike· challenged ✓
    Ronald Acuña Jr. vs Hayden Wesneski

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

  1. 1Yainer Diaz — ump said ball, robot ruled strike: overturned.
  2. 2Yainer Diaz — ump said ball, robot ruled strike: overturned.
  3. 3Sean Murphy — ump said ball, robot ruled strike: overturned.
  4. 4Yainer Diaz — ump said ball, robot ruled strike: overturned.
  5. 5Ronald Acuña Jr. — ump said strike, robot ruled ball: overturned.
  6. 6Sean Murphy — ump said ball, robot ruled strike: overturned.
  7. 7Sean Murphy — ump said ball, robot ruled ball: upheld.
  8. 8Yainer Diaz — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 6 of 8 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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