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There's a new champion in the 155-pound division. Islam Makhachev made relatively quick work of Charles Oliveira in the main event of UFC 280 to claim the vacant lightweight crown on Saturday night. The win completed an incredible journey for the pupil of UFC Hall of Famer Khabib Nurmagomedov.

Makhachev took the former champion down in Round 1 before dropping him in Round 2 and securing an arm-triangle choke. After the win, featherweight champ Alexander Volkanovski was called into the ring to make the push for a champ vs. champ fight in Volkanovski's backyard of Australia in February.

In the other title fight on the night, Aljamain Sterling took advantage of a vulnerable TJ Dillashaw to score the TKO victory and retain his title. Dillashaw told reporters after the fight that he blew out his shoulder in April and it continued to be an issue throughout training camp. The injury again came up in Round 1 when it appeared that Dillashaw's shoulder popped out before his corner was able to get it back into place. Sterling continued to push forward, however, and punish the former champ with ground and pound before the fight was called off.

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CBS Sports was with you throughout fight week with the latest news, in-depth features and betting advice to consider. Thanks for stopping by and we'll see you at UFC 281 in New York in November.

UFC 280 fight card, results

  • Islam Makhachev def. Charles Oliveira via second-round submission (head and arm choke)
  • Aljamain Sterling (c) def. TJ Dillashaw via second-round TKO (punches)
  • Sean O'Malley def. Petr Yan via split decision (29-28, 28-29, 29-28)
  • Beneil Dariush def. Matuesz Gamrot via unanimous decision (30-27, 30-27, 29-28)
  • Manon Fiorot def. Katlyn Chookagian via unanimous (29-28, 29-28, 29-28)
  • Belal Muhammad def. Sean Brady via second-round TKO (punches)
  • Caio Borralho def. Makhmud Muradov via unanimous decision (30-27, 30-27, 29-28)
  • Nikita Krylov def. Volkan Oezdemir via unanimous decision (30-27, 29-28, 29-28)
  • Abubakar Nurmagomedov def. Gadzhi Omargadzhiev via unanimous decision (29-28, 29-28, 30-27)
  • Armen Petrosyan def. A.J. Dobson via unanimous decision (30-27, 30-27, 30-27)
  • Muhammad Mokaev def. Malcolm Gordon via third-round submission (armbar)
  • Karol Rosa def. Lina Lansberg via majority decision (29-27, 29-27, 28-28)

UFC 280 countdown