Umpires try to restore order during the sixth inning when both benches and bullpens emptied onto the field of a baseball game between the Washington Nationals and the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Photo by: Alex Brandon

Umpires try to restore order during the sixth inning when both benches and bullpens emptied onto the field of a baseball game between the Washington Nationals and the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)