Marichal came to bat in the third inning expecting Koufax to take further retaliation against him but instead, he was startled when Roseboro's return throw to Koufax after the second pitch either brushed his ear or came close enough for him to feel the breeze off the ball. When Marichal confronted Roseboro about the proximity of his throw, Roseboro came out of his crouch with his fists clenched. Marichal afterwards stated that he thought Roseboro was about to attack him and raised his bat, striking Roseboro at least twice over the head with it, opening a two-inch gash that sent blood flowing down the catcher's face and required 14 stitches. Koufax raced in from the mound to attempt to separate them and was joined by the umpires, players and coaches from both teams.