 While originally only contested by men, a women's version was introduced at the 2018 event, and the event now features a men's and women's match.Beginning with the pay-per-view broadcast in 1989, the Royal Rumble became one of the promotion's original four pay-per-views, along with WrestleMania, SummerSlam, and Survivor Series, which were eventually dubbed the "Big Four".The card consisted of four matches.