Blue Notes · Umpire Grade2026-04-15
KC @ DET
Home plate: Jansen Visconti
“A steady night's work behind the plate.”
Umpire Grade
94.6% accurate
Run Favor
runs, KC
ABS Overturns
of 4 reviewed
What this shows — how Jansen Visconti called the 149 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 141 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
strike called ballball called strikeABS overturnedABS upheld
The calls that moved the game
- 1-0.39▼6 · 2-2 ball called strike· challenged
Kevin McGonigle vs Seth Lugo - 2+0.23▲7 · 0-2 strike called ball
Jonathan India vs Tyler Holton - 3+0.13▲2 · 1-1 strike called ball
Carter Jensen vs Jack Flaherty
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 · 1 overturned (ump overruled) · 3 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Salvador Perez — ump said strike, robot ruled ball: overturned.
- 2Kevin McGonigle — ump said strike, robot ruled strike: upheld.
- 3Jake Rogers — ump said strike, robot ruled strike: upheld.
- 4Jac Caglianone — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 2 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.