The event was a joint-promotion pay-per-view event, featuring performers from the Raw and SmackDown! brands. The card for the event featured two main events. The main match for the Raw brand was a Triple Threat match for the World Heavyweight Championship between champion Triple H, Shawn Michaels and Chris Benoit. Benoit won the match, making Triple H submit via the Crippler Crossface. The main match for the SmackDown! brand featured Eddie Guerrero versus Kurt Angle for the WWE Championship which Guerrero won after a small package. The event featured the return of The Undertaker, who defeated Kane after a Tombstone Piledriver. Also on the card was a match between Goldberg and Brock Lesnar with Stone Cold Steve Austin as the special guest referee. This was Goldberg's final match with WWE, and Lesnar departed the company to pursue a career in the NFL, and later became a mixed martial artist with UFC before returning to WWE on April 2, 2012. After Goldberg won the match following a Jackhammer, both men were given a Stone Cold Stunner by Austin on their way out.
WrestleMania XX was the third WrestleMania at Madison Square Garden but the fourth to take place in the New York metropolitan area (following WrestleMania I, WrestleMania 2, and WrestleMania X). The event grossed US$2.4 million in ticket sales, making the Pay-Per-View the highest grossing event ever for WWE at Madison Square Garden. More than 20,000 people from 16 countries, 48 states attended the event, which was also televised in more than 90 countries. The event generated an estimated $13.5 million of economic activity for New York City and created an equivalent of 96 full-year jobs.