That's a story I don't know, what happened? From Wikipedia... Earlier in the game, Marichal had knocked down Dodgers Maury Wills and Ron Fairly with brushback pitches. When Marichal came up to bat against Sandy Koufax in the third inning, Koufax wouldn't retaliate, but his catcher, Roseboro, apparently wanted to. Roseboro returned Koufax's pitches dangerously close to Marichal's face. Then, the future Hall-of-Famer hit Roseboro over the head with his bat twice, opening a two-inch gash that sent blood flowing down the catcher's face that would require 14 stitches. The Giants and the Dodgers, who nurture a heated rivalry with each other dating back to their days together in the New York market, and who were both strong contenders for the 1965 National League pennant, cleared their respective benches and began a 14-minute brawl on the field before Koufax, Giants captain Willie Mays and other peacemakers restored order.