ATH @ HOU
Home plate: Nick Mahrley
“The grade leaned — the ledger says which way.”
What this shows — how Nick Mahrley called the 148 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 134 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+0.69▼5 · 3-2 strike called ball· challenged
Jeremy Peña vs Jack Perkins - 2+0.28▼4 · 1-2 strike called ball
Nick Allen vs Jack Perkins - 3+0.28▼7 · 1-2 strike called ball
Christian Vázquez vs Mason Barnett
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 · 2 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Christian Vázquez — ump said ball, robot ruled strike: overturned.
- 2Shea Langeliers — ump said ball, robot ruled ball: upheld.
- 3Christian Vázquez — ump said strike, robot ruled ball: overturned.
- 4Christian Vázquez — ump said ball, robot ruled ball: 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.