UFC 100 attracted an estimated 11,000 fans to Mandalay Bay in Las Vegas Saturday night, July 11, and is believed to have generated about $5.1 million in ticket sales, according to Yahoo Sports and MMAJunkie.com. The mixed martial arts showcase, which featured a return match between Brock Lesnar and Frank Mir that Lesnar won, could go down as the promotion’s second-largest gate.