Carlos Ulberg describes severe knee injury from UFC 327 fight

Carlos Ulberg has revealed the extent of a serious knee injury he suffered during his appearance at UFC 327 on April 11, describing the damage as debilitating and leaving him unable to bear weight or move freely.

The New Zealand light heavyweight, fighting out of City Kickboxing, shared a concerning update in the days following the event, explaining that his knee felt as though it was shifting in and out of the joint and that the pain was severe enough to prevent him from standing. Ulberg said the joint was significantly swollen, and further medical evaluation is pending to determine the full scope of the injury.

Ranked third in the light heavyweight division, Ulberg carries a record of 15 wins and one loss at 35 years of age. Standing six-foot-four with a 77-inch reach, the orthodox striker has built a reputation as one of the division's most dangerous knockout artists, landing an impressive 6.54 significant strikes per minute at a 55 percent accuracy rate. Those physical tools have powered his rise through the rankings since joining the UFC roster.

Why it matters

• Ulberg sits at number three in the light heavyweight rankings, meaning an extended absence could reshape the division's contender picture.
• A serious knee injury — particularly one involving potential ligament or structural damage — typically requires months of recovery and rehabilitation.
• His striking-heavy style, built around explosive movement and range, would be significantly affected by any long-term reduction in mobility or athletic capacity.

The full diagnosis has not yet been disclosed, and the severity of the structural damage will determine what comes next for one of the light heavyweight division's most prominent contenders.