High Quality Content by WIKIPEDIA articles! WrestleMania IX was the ninth annual WrestleMania professional wrestling pay-per-view event produced by the World Wrestling Federation. The event took place at Caesars Palace in Las Vegas, Nevada on April 4, 1993 and was the first WrestleMania event held outdoors. The buildup to the pay-per-view consisted of feuds scripted by the WWF`s writers, and the matches that took place at the event had pre-determined outcomes that had been decided by the promotion.