McCullers allowed two runs on two hits and two walks with seven strikeouts over 6.1 innings Monday during Game 4 of the ALDS against Kansas City. He was in line for the win, but did not factor into the decision as the Royals tagged the Astros' bullpen for seven runs to come from behind and win the game.
Castro was hitless Monday during Houston's Game 4 ALDS loss to Kansas City. He struck out in all three of his at-bats before Jed Lowrie replaced him as a pinch-hitter in the bottom of the eighth inning.
Kazmir allowed three runs on five hits and one walk while striking out four over 5.1 innings against the Royals on Friday in Game 2 of the ALDS. He did not factor in the decision in the Astros' 5-4 loss.
With Carlos Gomez out of the starting lineup Thursday due to a lingering back injury, Marisnick drew the start in center field and went 2-for-4 with a double and a run scored in Houston's 5-2 win over Kansas City in Game 1 of the ALDS.