Both third baseman Ryan Zimmerman and first baseman Adam LaRoche are expected to return Wednesday after missing Tuesday night's 6-0 loss with sore backs. Zimmerman sat after he tweaked his back sliding into home plate Sunday with the eventual game-winning run. He said his back felt fine during the game, but it stiffened up on the plane ride home and still felt sore Tuesday afternoon. He thought he could have played, but saw no reason to push it at this point in the season.