"When I'm told he's available off the bench," said manager Bob Melvin, "that's a nice little thing to have in your pocket.
"We'll get a read on what his running ability will be, which is obviously important for him getting back in the game."
Cespedes is just 2-for-15 over his last five games ,but has hit the Astros well, batting .333 (25-for-75) against them in his career.
Brandon Moss started in left field in Cespedes' stead for a second straight night, while Craig Gentry played in center, with Coco Crisp getting the start at designated hitter for the third game of a four-game set.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.