HOU @ SD
Home plate: Alex MacKay
“The plate grew a few inches after the first pitch.”
What this shows — how Alex MacKay called the 135 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 123 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 strike called ball
Fernando Tatis Jr. vs Peter Lambert - 2+0.20▲4 · 2-1 strike called ball
Christian Walker vs Michael King - 3+0.13▲9 · 1-1 strike called ball
Daulton Varsho vs Mason Miller
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.
- 1Yordan Alvarez — ump said strike, robot ruled strike: upheld.
- 2Luis Campusano — ump said strike, robot ruled ball: overturned.
- 3Christian Vázquez — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.