Washington Nationals first baseman Adam LaRoche (25) is tagged out at home by Atlanta Braves catcher Evan Gattis (24) on a Washington Nationals third baseman Ryan Zimmerman double during the fourth inning of a baseball home opener at Nationals Park Friday, April 4, 2014, in Washington. (AP Photo/Alex Brandon)
Washington Nationals' Ryan Zimmerman (11) greets teammate Jayson Werth (28) at home plate behind New York Mets catcher Travis d'Arnaud after scoring on an RBI-double by Adam LaRoche in the fourth inning of a baseball game at Citi Field on Wednesday, April 2, 2014, in New York. (AP Photo/Kathy Kmonicek)
Bryce Harper and Ryan Zimmerman of the Washington Nationals take the field during their Grapefruit League game against the Detroit Tigers during Spring Training at Space Coast Stadium in Viera, Florida on March 20, 2014. Photo by Gregg Newton
Ryan Zimmerman of the Washington Nationals during their Grapefruit League game against the Detroit Tigers during Spring Training at Space Coast Stadium in Viera, Florida on March 20, 2014. Photo by Gregg Newton
Ryan Zimmerman of the Washington Nationals during their Grapefruit League game against the Detroit Tigers during Spring Training at Space Coast Stadium in Viera, Florida on March 20, 2014. Photo by Gregg Newton
Washington Nationals third baseman Ryan Zimmerman, right, throws out New York Mets' Andrew Brown in the third inning of a spring exhibition baseball game, Wednesday, March 5, 2014, in Viera, Fla. (AP Photo/Alex Brandon)
Washington Nationals third baseman Ryan Zimmerman, right, throws out New York Mets' Andrew Brown in the third inning of a spring exhibition baseball game, Wednesday, March 5, 2014, in Viera, Fla. (AP Photo/Alex Brandon)
This is a 2014 photo of Ryan Zimmerman of the Washington Nationals baseball team. This image reflects the Nationals active roster as of, Sunday, Feb. 23, 2014, when this image was taken. (AP Photo/Alex Brandon)
Washington Nationals third baseman Ryan Zimmerman (11) catches a throw as relief pitcher Ross Ohlendorf (43) watches during a spring training baseball workout, Thursday, Feb. 20, 2014, in VIera, Fla. (AP Photo/Alex Brandon)
Washington Nationals left fielder Bryce Harper, left, smiles with Ryan Zimmerman during a spring training baseball workout, Thursday, Feb. 20, 2014, in VIera, Fla. (AP Photo/Alex Brandon)
FILE - In this Sept. 7, 2013, file photo, Washington Nationals third baseman Ryan Zimmerman throws to first to put out a Miami Marlins batter during a baseball game in Miami. Zimmerman has a new piece of equipment in his locker--a first baseman's mitt. The Nationals' longtime third baseman will take some grounders on the opposite side of the diamond during spring training. Manager Matt Williams says he expects to use Zimmerman at first for a few games this season. (AP Photo/Wilfredo Lee, File)