Zimmerman is currently on the disabled list because of a left hamstring strain. Once Zimmerman returns to action, the Nationals will likely send third baseman Anthony Rendon back to Double-A Harrisburg.
Zimmerman has played in 15 games and is 12-for-53 with a home run, 11 RBIs and three runs scored.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.