It's Ryan Mother freaking Zimmerman.
You put him in the lineup every day until his arm falls off or he asks to go on the DL.
I don't care if he hit .200, you keep him in the middle of the lineup all season. I will never trust a player more than I do Ryan Zimmerman with the bat in his hands in a big situation.
He's due. He'll tell the Nationals when it's time for him to take some time off, not vice versa. If any med staff tries to pressure him, then fire them.