 The main event was The Undertaker versus Bret Hart for the WWF World Heavyweight Championship, with Undertaker winning via disqualification due to interference from Diesel.The Royal Rumble is an annual gimmick pay-per-view, produced every January by the World Wrestling Federation (WWF, now WWE) since 1988.It is one of the promotion's original four pay-per-views, along with WrestleMania, SummerSlam, and Survivor Series, later dubbed the "Big Four".