Renan Barao pushed his unbeaten streak to 31 straight fights Saturday in London, submitting Michael McDonald in the fourth round of their main event fight at UFC on FUEL TV 7.
Barao (30-1) locked in an arm-triangle at the 3:57 mark of the fourth, forcing the top contender to tap.
The Brazilian is now 5-0 since joining the promotion in 2011, including recent wins over McDonald, Urijah Faber and Scott Jorgensen.
While Barao’s next opponent is undetermined, he is hoping to unify the titles with Dominick Cruz, who is sidelined after a second knee operation.
In other action, Cub Swanson moved closer to a potential UFC featherweight title fight by besting Dustin Poirier, Jimi Manuwa earned a victory over Cyrille Diabate, and Gunnar Nelson downed Jorge Santiago.
MAIN CARD (FUEL TV)
Interim UFC Bantamweight Championship
Renan Barao def. Michael McDonald via submission (arm triangle choke) at 3:57 of Round 4 to defend interim UFC bantamweight title
Cub Swanson def. Dustin Poirier via unanimous decision (29-28, 30-27, 30-27)
Jimi Manuwa def. Cyrille Diabate via TKO (injury) at 5:00 of Round 1
Gunnar Nelson def. Jorge Santiago via unanimous decision (29-28, 29-28, 30-27)
James Te Huna def. Ryan Jimmo via unanimous decision (29-27, 29-28, 29-28)
Matt Riddle def. Che Mills via split decision (29-28, 28-29, 30-27)
PRELIMINARY CARD (Facebook)
Renee Forte def. Terry Etim via unanimous decision (29-28, 29-28, 30-27)
Danny Castillo def. Paul Sass via unanimous decision (30-27, 30-27, 29-28)
Andy Ogle def. Josh Grispi via unanimous decision (29-28, 29-28, 30-27)
Tom Watson def. Stanislav Nedkov via KO (strikes) at 4:42 of Round 2
Vaughan Lee def. Motonobu Tezuka via unanimous decision (30-27, 30-27, 30-27)
Phil Harris def. Ulysses Gomez via unanimous decision (30-27, 30-27, 29-28)