Roberto Alomar
Baltimore Orioles second baseman Roberto Alomar spit on home plate umpire John Hirshbeck after Alomar was ejected during the first inning of 1996 game against the Blue Jays. The rift between Alomar and Hirschbeck escalated the next day when the umpire charged into the Orioles’ clubhouse and tried to attack Alomar. (AP Photo/Moe Doiron)