After a fan steals Los Angeles catcher Chad Kreuter’s hat and hits him in the back of the head, many Dodgers, including coaches John Shelby and Rick Dempsey, go into the stands and start fighting with the Wrigley Fieldfaithful. When the melee ends, several fans are arrested as the game is delayed nearly ten minutes, and there is litter all over the field. The Dodgers defeat the Cubs, 6 – 5.

On May 16, 2000 — After a fan steals Los Angeles catcher Chad Kreuter’s hat and hits him in the back of the head, many Dodgers, including coaches John Shelby and Rick Dempsey, go into the stands and start fighting with the Wrigley Fieldfaithful. When the melee ends, several fans are arrested as the game is delayed nearly ten minutes, and there is litter all over the field. The Dodgers defeat the Cubs, 6 – 5.

Source:
Baseball Reference May 16