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Top lightweight contender Arman Tsarukyan, riding a five-fight win streak, returns to face surging striker Mauricio Ruffy, fresh off a highlight-reel KO of Michael Chandler. The five-round clash could decide the division's next title challenger.

Former Bellator king Patricio Pitbull meets surging South Korean striker Dooho Choi in a featherweight clash on the UFC 331 main card in Los Angeles, where Choi rides a three-fight win streak into a pivotal test.

Olympic gold medalist Gable Steveson puts his perfect 4-0 record on the line against knockout artist Sean Sharaf in a heavyweight showdown on the UFC 331 main card in Los Angeles, where every one of both men's wins has come by first-round KO.

Undefeated Polish prospect Iwo Baraniewski, 9-0 with every win in round one, faces his toughest test yet in veteran Alonzo Menifield, who has won three of his last four. A light heavyweight clash of knockout power versus proven experience.

Former title challenger Marlon 'Chito' Vera meets red-hot Charles Jourdain in a pivotal bantamweight battle on the UFC 331 prelims in Los Angeles, where Jourdain rides a three-fight win streak and Vera fights to reclaim his momentum.

Fan favorite Tai 'Bam Bam' Tuivasa collides with towering Cuban striker Robelis Despaigne in a heavyweight banger on the UFC 331 prelims in Los Angeles, where Despaigne returns to the Octagon fresh off a first-round KO of Junior dos Santos.

Relentless pressure fighter Michael Aswell Jr. squares off with South Korean striker JooSang Yoo in a featherweight scrap on the UFC 331 prelims in Los Angeles, where Yoo returns after announcing himself with a 28-second KO in his UFC debut.

Surging Brazilian knockout artist Ryan Gandra, unbeaten in the UFC and riding a nine-fight win streak, takes on towering middleweight Ozzy Diaz on the UFC 331 prelims in Los Angeles, where Gandra hunts another lightning-fast finish.

Middleweight finishers collide as Edmen 'The Golden Boy' Shahbazyan takes on hard-hitting Brazilian Brunno 'The Hulk' Ferreira on the UFC 331 prelims in Los Angeles, with 24 first-round finishes between them and both men hungry to bounce back.

Ranked flyweight contenders collide as Scottish standout Casey 'King' O'Neill, riding back-to-back wins, takes on Brazilian Eduarda Moura on the UFC 331 prelims in Los Angeles in a pivotal women's flyweight showdown.

Georgian kickboxing ace Giga 'Ninja' Chikadze trades leather with surging Brazilian finisher Joanderson 'Tubarao' Brito in a featherweight style clash on the UFC 331 prelims in Los Angeles, with Brito riding back-to-back wins into the Octagon.