The Greatest Spectacle including all the WWE Superstars! (WATCH) Don't miss your chance to be part of a milestone event, a quarter-century in the making on Sunday, April 5 at 5:30 p.m. CT at the Reliant Center! Get your tickets NOW at the Reliant Center Box Office, at Texas Ticketmaster retail locations, www.ticketmaster.com or charge by phone at Ticketmaster Express: 1-866-448-7849.