Carlos Ulberg has disclosed the current state of his knee following his recent bout. He described the knee as swollen and painful, making it difficult for him to stand or move around. Ulberg experienced a sensation of the knee shifting in and out of the joint during the fight. The pain was so severe that he was unable to put weight on the leg. Despite the injury, Ulberg continued fighting and ultimately secured victory.
Carlos Ulberg has opened up about a significant knee injury he sustained during his recent fight against Jiri Prochazka, revealing the joint was swollen, painful, and at times appeared to be shifting in and out of place throughout the bout.
The New Zealand light heavyweight, who trains out of City Kickboxing, described being unable to put weight on the leg or move freely during the fight. Despite that, Ulberg gutted through the ordeal and walked away with the victory.

Ulberg, nicknamed "Black Jag," carries a 15-1 record and is currently ranked third in the light heavyweight division at 35 years old. Standing six-foot-four with a 77-inch reach, he is one of the more physically imposing fighters in the weight class. His offensive output is among the most impressive in the division, with 6.54 significant strikes landed per minute and a striking accuracy of 55 percent.
Why it matters
- Ulberg's win over a high-profile opponent like Prochazka significantly boosts his standing in a crowded light heavyweight title picture
- A serious knee injury could affect his timeline for a potential next fight or title shot
- The revelation raises questions about how the injury may have influenced the fight itself, and what recovery looks like for a ranked contender on an upward trajectory
- At 15-1 and ranked third, Ulberg is firmly in championship contention, making his health status a major storyline for the division






