Carlos Ulberg knocked out Jiri Prochazka in the first round to capture the UFC light heavyweight championship. The victory extends Ulberg's winning streak to ten consecutive fights in the UFC. This marks his sixth knockout in the promotion and ninth knockout of his career overall. Prochazka suffered his third title fight loss in the light heavyweight division, dropping his UFC record to 6-3. Ulberg's performance establishes him as the new champion in the 205-pound weight class.
Carlos Ulberg knocked out Jiri Prochazka in the first round on April 12, 2026, to claim the UFC light heavyweight championship and announce himself as the new ruler of the 205-pound division.
Ulberg, known as "Black Jag," entered the fight ranked third in the division and made the most of his title opportunity in stunning fashion. The 35-year-old New Zealander, training out of City Kickboxing, now holds a professional record of 15-1 and has won ten consecutive fights inside the UFC. The finish was his sixth knockout in the promotion and ninth of his career overall, a testament to the finishing power he has refined over time. Standing six-foot-four with a 77-inch reach, Ulberg lands an impressive 6.54 significant strikes per minute at 55 percent accuracy, making him one of the more prolific and precise strikers in the division.
Prochazka, the 33-year-old Czech standout from Jetsaam Gym Brno, came in ranked second in the world at light heavyweight and carried a reputation as one of the most dangerous fighters on the roster. At six-foot-three with a massive 80-inch reach, he posts 5.69 significant strikes per minute at 55 percent accuracy. The defeat drops his UFC record to 6-3 and represents his third loss in a light heavyweight title fight, a painful chapter in what has otherwise been a remarkable run at the top of the division.
Why it matters
- Ulberg rises from third-ranked contender to undisputed light heavyweight champion in a single performance
- Prochazka's third title fight defeat raises serious questions about his path back to championship contention
- The finish reinforces City Kickboxing's status as one of the premier striking camps in the sport
- A new champion at 205 pounds reshuffles the entire divisional picture, with ranked contenders now targeting Ulberg
