Schafer, who was replaced in the lineup Tuesday by Jason Bourgeois, had the shin heavily taped and said a day of rest would do him some good. He's been diagnosed with a bruised shin.
"I haven't done that since '08," Schafer said about fouling the ball off his shin. "I used to do it a lot, and I haven't done it in a long time, so usually if that happens the bounce gets you first, but there was no bounce in that one. It was a direct hit. I'll be alright. I'll try to take today and rest."
Astros manager Brad Mills said Schafer would be used if needed. He had started 17 of the previous 20 games in center field prior to Tuesday.
"He wasn't going to be in the lineup [Tuesday] anyway, but at the same time he has played in Washington [last weekend] against a couple of lefties, but with that bruise that kind of added a little bit to it," Mills said. "He says he's OK and well enough to play, but, if need be, he can go in and play."