WrestleMania 31 was the thirty-first annual WrestleMania professional wrestling pay-per-view (PPV) event produced by WWE. It took place on March 29, 2015, at Levi's Stadium in Santa Clara, California. Nine matches took place at the event, with two being shown on the pre-show. In the main event, Seth Rollins cashed in his Money in the Bank contract as the scheduled match between Brock Lesnar and Roman Reigns was in progress, and won the resulting impromptu triple threat match to capture the WWE World Heavyweight Championship. The event was also notable for Sting's debut match in WWE and only WrestleMania match, in which he fell to Triple H.