Carlos Ulberg will look to emerge as a title contender when he takes on a former champion at UFC Fight Night 255. Jan Blachowicz vs. Carlos Ulberg preview Jan Blachowicz (29-10-1 MMA, 12-7-1 UFC) hasn’t competed since a split decision loss to current UFC light heavyweight champion Alex Pereira in July 2023. Prior to that, he battled Magomed Ankalaev to a split draw in their vacant title fight at UFC 282. Since losing his UFC debut, City Kickboxing’s Ulberg (12-1 MMA, 7-1 UFC) has won seven straight, most recently a unanimous decision over former title challenger Volkan Oezdemir at UFC Fight Night 248.