Light heavyweight contender Carlos Ulberg posted on social media that he has successfully undergone knee surgery. The post did not specify the nature of the injury or provide a timeline for his return to competition. Ulberg shared the update directly with his followers on his social channels. No further medical details were disclosed in the brief announcement. The community expressed wishes for his speedy recovery.
Carlos Ulberg has gone under the knife, with the New Zealand light heavyweight announcing via social media on April 17, 2026, that he has successfully completed knee surgery.
The 35-year-old City Kickboxing product shared the update directly with his followers but offered no specifics on the nature of the injury, the procedure performed, or any projected timeline for his return to the cage. Fans and the broader MMA community responded with messages of support and wishes for a smooth recovery.

Ulberg, who competes under the nickname "Black Jag," enters this recovery period as one of the more dangerous strikers in the 205-pound division. Ranked third among light heavyweights, he carries a 15-1 professional record and brings elite physical tools to every fight — standing six-foot-four with a 77-inch reach. His output inside the cage backs up the reputation: he lands an impressive 6.54 significant strikes per minute at a 55 percent accuracy rate, numbers that rank among the best in his weight class.
Why it matters
- Ulberg's third-place divisional ranking means any extended absence could affect the light heavyweight title picture and reshuffle contender timelines.
- His striking-heavy style — built around volume and accuracy from City Kickboxing — makes ring rust a genuine concern after significant time away.
- No return date has been disclosed, leaving his next opponent and scheduling slot entirely open at this stage.








