SF @ BOS
Home plate: John Libka
“A workmanlike night — nothing to frame, nothing to fix.”
What this shows — how John Libka called the 163 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 155 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
- 1-0.23▲7 · 0-2 ball called strike
Willy Adames vs Erik Miller - 2+0.21▲3 · 3-0 strike called ball
Rafael Devers vs Sonny Gray - 3+0.13▲2 · 1-1 strike called ball
Turner Hill vs Sonny Gray
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 · 3 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Sonny Gray — ump said strike, robot ruled ball: overturned.
- 2Adley Rutschman — ump said strike, robot ruled ball: overturned.
- 3Drew Gilbert — ump said strike, robot ruled strike: upheld.
- 4Drew Cavanaugh — ump said ball, robot ruled ball: upheld.
- 5Adley Rutschman — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.