ATL @ PHI
Home plate: John Libka
“Reliable as a Tuesday: no complaints, no headlines.”
What this shows — how John Libka called the 169 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 159 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
- 1-0.39▲4 · 2-2 ball called strike
Austin Riley vs Taijuan Walker - 2-0.28▲1 · 1-2 ball called strike
Austin Riley vs Taijuan Walker - 3+0.20▲1 · 2-1 strike called ball
Ronald Acuña Jr. vs Taijuan Walker
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
3 pitches went to the robots · 1 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Ronald Acuña Jr. — ump said strike, robot ruled strike: upheld.
- 2Drake Baldwin — ump said ball, robot ruled strike: overturned.
- 3Alec Bohm — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 2 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.