BOS @ BAL
Home plate: Jansen Visconti
“One of those nights the challenge system was invented for.”
What this shows — how Jansen Visconti called the 146 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 133 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
The calls that moved the game
- 1-0.30▼1 · 3-1 ball called strike
Coby Mayo vs Brayan Bello - 2-0.28▼8 · 1-2 ball called strike
Coby Mayo vs Ryan Watson - 3-0.23▲8 · 0-2 ball called strike
Willson Contreras vs Cameron Foster
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
2 pitches went to the robots · 1 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Trevor Story — ump said strike, robot ruled ball: overturned.
- 2Carlos Narváez — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.