SEA @ HOU
Home plate: Alex MacKay
“A steady night's work behind the plate.”
What this shows — how Alex MacKay called the 185 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 172 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▼5 · 0-2 strike called ball
Isaac Paredes vs George Kirby - 2-0.20▲9 · 2-1 ball called strike· challenged ✓
Brendan Donovan vs Josh Hader - 3+0.19▲5 · 2-0 strike called ball
Randy Arozarena vs Peter Lambert
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 · 2 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1George Kirby — ump said ball, robot ruled ball: upheld.
- 2Jose Altuve — ump said strike, robot ruled strike: upheld.
- 3Christian Vázquez — ump said ball, robot ruled strike: overturned.
- 4Christian Vázquez — ump said ball, robot ruled ball: upheld.
- 5Brendan Donovan — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 4 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.