Benches cleared in Sunday's game between the Kansas City Royals and Toronto Blue Jays.
The dugouts and bullpens emptied in the eighth inning when Toronto reliever Aaron Sanchez was ejected for hitting Kansas City's Alcides Escobar on the thigh.
The teams had been going back-and-forth since Edinson Volquez hit Josh Donaldson on the left shoulder in the first.
Volquez didn't mince words when asked whether Donaldson overreacted to being hit and to a pair of later pitches that were up and in.
"He's a little baby," Volquez said. "He was crying like a baby."
Donaldson and Volquez traded stares and words as the hitter took a slow walk to first base after being hit. Home plate umpire Jim Wolf warned both dugouts.
When Donaldson batted again in the third, Volquez missed high and inside with a pitch that sailed to the backstop. John Gibbons came out to argue but Volquez was not ejected.
"Our guy loses a two-seamer and hits a guy in the knee when we've had four balls thrown at our neck the entire day and our guy gets ejected, it just doesn't seem proper," Donaldson said.