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DENVER, CO - AUGUST 18: Jordan Zimmermann (27) of the Washington Nationals walks off the field after giving up two runs in the first inning against the Colorado Rockies during a National League game at Coors Field. The Colorado Rockies hosted the Washington Nationals on Tuesday, August 18, 2015. (Photo by AAron Ontiveroz/The Denver Post via Getty Images)

DENVER, CO - AUGUST 18: Jordan Zimmermann (27) of the Washington Nationals walks off the field after giving up two runs in the first inning against the Colorado Rockies during a National League game at Coors Field. The Colorado Rockies hosted the Washington Nationals on Tuesday, August 18, 2015. (Photo by AAron Ontiveroz/The Denver Post via Getty Images)