I say (pretending to be Rizzo):
Tracy replaces HRod
Werth replaces Brown, but slowly returns. Maybe alternate him with Harper, who seems to be running run. Do that fo rtwo weeks, and then figure out to do with all the OFs. Maybe Morse to 1B for a few days to let LaRoche heal his back.
I can't figure out where to play Shark and TMoore, unless the Nats do some platooning.