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.

The quest for improving oneself is often a fighter’s primary motivation. Middleweight contender Jared Cannonier famously started his UFC career as a heavyweight, eventually losing over 100 pounds to compete in his current weight class. Others, such as rising heavyweight Martin Buday, began training in martial arts to lose weight.

Reigning UFC light heavyweight champion Alex Pereira brutally knocked out a sparring partner, and fight fans are not impressed.

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.

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.

The incredible transformation of Steven Asplund sees him lose over 200 lbs, chasing a UFC dream through discipline, grit, and perseverance.

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

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

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

Approaching two years since he last fought in MMA, former UFC fighter Tyson Pedro says he'll be back in the sport in 2026. The 34-year-old Australian on Monday told Ariel Helwani (H/T Jed I. Goodman) he has signed with the PFL and will make his debut in the promotion next year.