Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-25

PIT @ DET

Home plate: Jonathan Parra

“Reliable as a Tuesday: no complaints, no headlines.”

A
Umpire Grade
95.7% accurate
0.4
Run Favor
runs, DET
2
ABS Overturns
of 5 reviewed

What this shows — how Jonathan Parra called the 188 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 180 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: Rafael Flores Jr. — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Rafael Flores Jr. — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Spencer Torkelson — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Jake Mangum — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Ben Malgeri — 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+0.28▲8 · 1-2 strike called ball
    Brandon Lowe vs Andrew Sears
  2. 2+0.19▼3 · 2-0 strike called ball
    Brett Callahan vs Bubba Chandler
  3. 3+0.19▼4 · 2-0 strike called ball
    Eduardo Valencia vs Evan Sisk

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 · 2 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Rafael Flores Jr. — ump said ball, robot ruled strike: overturned.
  2. 2Rafael Flores Jr. — ump said ball, robot ruled ball: upheld.
  3. 3Spencer Torkelson — ump said strike, robot ruled ball: overturned.
  4. 4Jake Mangum — ump said strike, robot ruled strike: upheld.
  5. 5Ben Malgeri — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 4 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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