Carlos Ulberg knocked out Jiri Prochazka in the first round at UFC 327 to become the new UFC light heavyweight champion. The victory marks Ulberg's tenth consecutive win in the UFC, his sixth knockout in the promotion, and his ninth knockout overall in his career. The New Zealand fighter's winning streak solidifies his dominance in the division. Prochazka now has lost his third light heavyweight title fight and holds a 6-3 record in the UFC. This represents a major changing of the guard in the 205-pound division.
Carlos Ulberg stopped Jiri Prochazka by knockout in the first round at UFC 327 on April 11 to claim the UFC light heavyweight championship, completing one of the most impressive runs in recent divisional history.
Ulberg, known as "Black Jag," enters the record books at 15-1-0, finishing his tenth consecutive UFC victory and recording his ninth career knockout and sixth inside the promotion. The 35-year-old New Zealander trains out of City Kickboxing and stands six-foot-four with a 77-inch reach. He has been among the most active strikers in the 205-pound division, averaging 6.54 significant strikes per minute at 55 percent accuracy, and his finishing instincts have now earned him the sport's ultimate reward.
Prochazka, the former champion from the Czech Republic, falls to 32-6-1 overall and suffers his third defeat in a light heavyweight title fight. The 33-year-old from Jetsaam Gym Brno held a 6-3 promotional record and carried his own formidable striking credentials into the bout, averaging 5.69 significant strikes per minute at 55 percent accuracy across a six-foot-three, 203-centimeter frame with an 80-inch reach. The loss ends his run as the division's second-ranked contender and leaves his title aspirations in a difficult spot.
Why it matters
- Ulberg becomes the new UFC light heavyweight champion with a 10-fight UFC winning streak, signaling a clear shift at the top of the 205-pound division.
- Prochazka's third title-fight loss raises serious questions about his path back to championship contention despite his elite striking pedigree.
- Two high-volume orthodox strikers meeting at the top of the division produced a first-round finish, underlining the explosive nature of the light heavyweight title picture moving forward.
Saturday, April 11, 2026
