Washington Nationals star Bryce Harper charged San Francisco Giants reliever Hunter Strickland in the eighth inning of the teams' game on Monday.
Strickland plunked Harper in the hip with a pitch. Harper then strode to the mound, threw his helmet at the Giants pitcher and the two exchanged blows as benches cleared.
The 6-foot-4, 220-pound right-hander had to be carried off the field by several of his Giants teammates to keep him away from the melee.
It was the first time the two had met since Harper hit two home runs off Strickland during the 2014 NLDS between the Nats and Giants.