Carlos Ulberg's manager Ash Belcastro confirmed that the fighter has suffered a torn anterior cruciate ligament (ACL). The manager stated that the surgery went "very well" and that Ulberg is focused on returning as quickly as possible. Recovery from this injury could take up to 12 months, making an appearance in the octagon by late 2026 uncertain. The post raises the question of whether an interim title should be introduced during Ulberg's absence. This represents a significant setback for the light heavyweight contender's career momentum.
Carlos Ulberg has suffered a torn ACL, his manager Ash Belcastro confirmed on April 17, with the New Zealander facing a recovery period that could stretch up to 12 months and cast serious doubt over any octagon return before late 2026.
Belcastro reported that Ulberg's surgery went "very well" and that the fighter is focused on returning as quickly as possible, though the nature of ACL reconstruction means a lengthy rehabilitation process is unavoidable.

Ulberg, known as "Black Jag," holds a 15-1 record and is currently ranked third in the light heavyweight division at 35 years old. The City Kickboxing product stands six-foot-four with a 77-inch reach and has built a reputation as one of the most dangerous strikers in the weight class, landing 6.54 significant strikes per minute at a 55 percent accuracy rate. That offensive output had driven a strong run of momentum in a stacked division.
Why it matters
- Ulberg's absence removes the third-ranked contender from the light heavyweight picture for the foreseeable future, reshaping the path to a title shot for those ranked below him.
- A 12-month timeline means the 193 cm knockout threat could miss all of 2026, prompting questions about whether the division needs an interim title to maintain activity at the top.
- His striking-heavy style had made him a compelling matchup for any champion or contender, and that lost momentum is difficult to recover at 35 years of age.






