WrestleMania IV was the fourth annual WrestleMania professional wrestling pay-per-view event produced by the World Wrestling Federation (WWF). It took place on March 27, 1988, at the Historic Atlantic City Convention Hall in Atlantic City, New Jersey. The announced attendance of WrestleMania IV was 19,199.The main event was the finals of a fourteen-man single elimination tournament for the Undisputed WWF Championship, where Randy Savage defeated Ted DiBiase to win the vacant title.