During UFC 77, it was announced that Lesnar had reached a deal to fight with the Ultimate Fighting Championship. After losing his first fight to Frank Mir and winning his second fight against Heath Herring
Lesnar's next opponent was Randy Couture for the UFC Heavyweight Championship at UFC 91:Couture vs Lesnar on November 15, 2008. Lesnar beat Couture via a technical knockout in Round 2, becoming the UFC Heavyweight Champion. Brock Lesnar is the only man so far to have been the WWE Champion (three times) and IWGP Heavyweight Champion (once) as well as the UFC Heavyweight Champion.