HOUSTON (AP) — Houston starter Luis García left Game 2 of the AL Championship Series in the second inning against the Boston Red Sox with right knee discomfort.

The rookie walked Kevin Plawecki leading off the second inning and was then visited on the mound by a trainer and pitching coach Brent Strom. García walked off with a trainer after a few minutes, and Strom motioned to the bullpen for a reliever.

García was not sharp from the start, allowing a leadoff double to Kyle Schwarber and walking two batters before a grand slam by J.D. Martinez.

The team announced his injury later Saturday but did not provide any details. The Astros are already thin in their rotation after ace Lance McCullers Jr. was left off the roster for this series because of a strained muscle in his throwing arm.

Jake Odorizzi took over after García’s exit, pausing the game for several minutes while he warmed up on the field. Odorizzi is a starter who was left off the roster for the Division Series before getting a spot in this round because of the injury to McCullers.

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