Ulberg undergoes ACL surgery after title win at UFC 327

Carlos Ulberg captured the UFC light heavyweight title at UFC 327 on April 11, but the newly crowned champion is now facing a significant recovery after undergoing ACL surgery on his right knee, which he injured during the championship bout.

Ulberg, 35, representing New Zealand and training out of City Kickboxing, improved his record to 15-1-0 with the victory. Standing six-foot-four with a 77-inch reach, the orthodox striker has built his reputation as one of the division's most dangerous offensive weapons, landing an impressive 6.54 significant strikes per minute at a 55 percent accuracy rate. He entered the fight ranked third in the light heavyweight division before claiming the belt.

The ACL surgery addresses the damage sustained during Saturday's fight, though no recovery timeline has been officially confirmed. Ulberg also noted he misplaced his championship belt during post-fight celebrations, a lighter footnote to what is otherwise a serious medical situation.

Why it matters

• Ulberg's recovery timeline is uncertain, which could delay his first title defense significantly
• The light heavyweight division may need to consider interim title options if his rehabilitation extends well into 2026
• Ulberg's high-volume striking style is heavily dependent on movement and athleticism, making a full knee recovery critical before his return
• At 35, the length of his rehab will be a key factor in how quickly the division can move forward at the top