UFC 116: Lesnar VS Carwin was a mixed martial arts event held by the Ultimate Fighting Championship on 3rd July 2010 at the MGM Grand Garden Arena in Las Vegas, Nevada, United States. Shane Carwin, who won the interim heavyweight championship by defeating Frank Mir at UFC 111, faced current heavyweight champion Brock Lesnar who retained his heavyweight belt via submission (choke) at 2:19 of Round 2 in the UFC 116 main event which was one of the most anticipated fights in UFC history.