Carlos Ulberg Overcomes Knee Injury to Capture UFC Light Heavyweight Title

The new champion reveals the extent of his painful injury and dismisses Jiri Prochazka's 'mercy' claims

Apr. 14, 2026 at 1:07am

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An abstract, expressionist painting in neon colors depicting the intense, chaotic movements and energy of a UFC light heavyweight title fight, with the fighters' forms dissolving into vibrant brushstrokes and splatters of paint.The new UFC light heavyweight champion's gutsy performance and dramatic victory, despite a painful knee injury, has electrified the division.Las Vegas Today

In a dramatic upset at UFC 327, Carlos Ulberg defeated Jiri Prochazka to win the vacant light heavyweight title, despite suffering a serious knee injury midway through the first round. Ulberg revealed that his knee 'felt like it was going in and out of the socket' and that the 'pain was unbearable', but he managed to land a knockout blow to claim victory. Ulberg dismissed Prochazka's claims that he had shown 'mercy' during the fight, calling it 'total bullshit' and arguing that Prochazka was 'full of fear and hesitation'.

Why it matters

Ulberg's victory over the heavily favored Prochazka is a major upset in the UFC light heavyweight division, and his ability to overcome a potentially serious knee injury to secure the win is a testament to his toughness and determination. The extent of Ulberg's injury and his dismissal of Prochazka's 'mercy' claims add intrigue to the potential rematch and Ulberg's future title defenses.

The details

Midway through the opening round, Ulberg's knee visibly gave out during an exchange, causing him to slip and struggle to put weight on his leg. Despite the injury, Ulberg still outlanded Prochazka 21-11 in the fight, and when the opportunity presented itself, he landed a clean left hook to finish the fight at 3:45 of Round 1. Ulberg revealed that his knee 'felt like it was going in and out of the socket' and that the 'pain was unbearable', making it difficult for him to even walk. He is now waiting to undergo scans to determine the extent of the injury, which could potentially be a torn ACL.

  • The fight took place at UFC 327 on April 13, 2026.
  • Ulberg will undergo scans on his injured knee this week when he arrives in Las Vegas.

The players

Carlos Ulberg

The newly crowned UFC light heavyweight champion, who overcame a serious knee injury to defeat Jiri Prochazka.

Jiri Prochazka

The former light heavyweight title challenger, who lost to Ulberg despite claiming he had shown 'mercy' during the fight.

Magomed Ankalaev

A top contender in the UFC light heavyweight division, whom Ulberg believes Prochazka will struggle to defeat in future matchups.

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What they’re saying

“Yeah, was just a freak accident. I think what had happened was I pushed off my leg, and essentially it's just my knee that gave out, and that just caused a bit of vulnerability in the fight.”

— Carlos Ulberg, UFC Light Heavyweight Champion

“Bullshit, total bullshit — that's fear. That was fear that he had. That wasn't any kind of mercy. That's the difference between a champion and someone who's just playing for the crowd. There was no mercy in there. He was full of fear, hesitation, and that's what got him clipped.”

— Carlos Ulberg, UFC Light Heavyweight Champion

“I felt mercy, but that's the difference between a champion and someone who's just playing for the crowd.”

— Jiri Prochazka, Former UFC Light Heavyweight Title Challenger

What’s next

Ulberg will undergo scans on his injured knee this week when he arrives in Las Vegas, and the results will determine the extent of the injury and his timeline for recovery. A rematch between Ulberg and Prochazka is likely to be discussed, but Ulberg has also dismissed Prochazka's chances against top contender Magomed Ankalaev.

The takeaway

Carlos Ulberg's gutsy performance and victory over the heavily favored Jiri Prochazka, despite suffering a serious knee injury, has cemented his status as the new UFC light heavyweight champion. His dismissal of Prochazka's 'mercy' claims and his confidence in facing other top contenders like Magomed Ankalaev suggest that Ulberg is ready to defend his title against all comers, once he recovers from his injury.