Melquizael Costa capped off a tremendous 2025 with his fourth win of the year but none better than the vicious head kick knockout he delivered at UFC Vegas 112.

Check out the super-slow motion video highlights from UFC 323 in Las Vegas, which featured two title fights at the top of the card.

The first preliminary fight on the UFC 323 card ended in spectacular fashion. Featherweights Mairon Santos (17-1) and Muhammad Naimov (13-4) shared the Octagon inside T-Mobile Arena in Las Vegas. Santos was getting the better of Naimov in the standup, and it led to a one-punch knockout in the third round.

Leon Edwards is not thinking about the past after suffering the first knockout of his career at UFC 322. Edwards, 34, lost his third consecutive bout in Dana White’s promotion at UFC 322

Manuel Torres feels like he's ready to take on the top of the lightweight rankings following his knockout win at UFC 323.

Undefeated UFC lightweight champion Ilia Topuria explained his absence from the UFC 324 title bout on Monday, alleging he's addressing an extortion attempt and will return to the cage at the appropriate time.

UFC Featherweight Champion Alexander Volkanovski has addressed recent speculation that he plans to retire following his next fight.

UFC title holder IIia Topuria took a break from the sport in November to fight what he is calling “attempted extortion”.

Go inside the numbers of UFC Vegas 112, the final event of the year, where a couple of historic knockouts happened to close the show.