Carlos Ulberg's manager Ash Belcastro has confirmed that the light heavyweight contender suffered a torn anterior cruciate ligament. Ulberg has already undergone surgery, which Belcastro described as having gone "very well." The fighter is focused on returning to competition as quickly as possible. However, recovery from an ACL tear typically takes up to 12 months, casting doubt on whether Ulberg will compete at all in 2026. The injury and extended timeline have prompted questions about whether an interim title should be introduced in the division.
Carlos Ulberg has suffered a torn anterior cruciate ligament, his manager Ash Belcastro confirmed on April 17, with the New Zealand light heavyweight already through surgery and facing a recovery period of up to 12 months.
Belcastro described the procedure as having gone "very well," and Ulberg is reported to be focused on returning to competition as soon as possible. Even so, the standard timeline for ACL rehabilitation puts serious doubt on the 35-year-old competing at any point in 2026.

Ulberg, who trains out of City Kickboxing, holds a 15-1 record and is currently ranked third in the light heavyweight division. Known by his nickname "Black Jag," the six-foot-four orthodox striker stands among the most dangerous contenders in the 205-pound class. He lands an impressive 6.54 significant strikes per minute at 55 percent accuracy, numbers that place him among the higher-volume, high-efficiency strikers in the weight class. With a reach of 77 inches, he has the physical tools to threaten anyone at the top of the division.
Why it matters
- Ulberg's absence removes the division's third-ranked contender from the competitive picture for the foreseeable future.
- A 12-month recovery window likely rules him out of any title opportunity in 2026, disrupting the light heavyweight rankings picture.
- The extended timeline has already prompted discussion within the sport about whether an interim championship should be introduced to keep the division active.
- City Kickboxing loses one of its highest-profile fighters at a critical moment in his career trajectory.






