Israel Adesanya failed in his bid to become a two-weight world champion after he was outpointed by Jan Blachowicz.
Middleweight champion Adesanya was bidding to become the fifth fighter to hold two UFC titles simultaneously after Conor McGregor, Daniel Cormier, Henry Cejudo and Amanda Nunes.
But he struggled with the step up in weight and was dominated in the last two rounds when Blachowicz took the fight to the canvas and was beaten for the first time in mixed martial arts.
The Pole had won the the light-heavyweight title last September when he stopped Dominick Reyes after Jon Jones had vacated.
And he was handed a resounding win by the judges who scored the bout 49-46, 49-45, 49-45.