Introduction
UFC 327: Prochazka vs. Ulberg took place on Saturday, April 11, 2026 at the Kaseya Center in Miami, Florida. Carlos Ulberg became the new UFC light heavyweight champion by knocking out Jiri Prochazka at 3:45 of round one in one of the most extraordinary performances in UFC history — after suffering a blown-out right knee in the opening minute of the fight. Ulberg fought effectively on one leg, absorbed significant punishment as Prochazka targeted the injury, then landed a counter left hook that dropped the Czech fighter and finished him on the canvas. The title was vacant: Alex Pereira had relinquished the light heavyweight belt to challenge for the interim heavyweight championship.
Ulberg (15-1) subsequently had ACL surgery. Cub Swanson closed out a 22-year MMA career with a walk-off KO of Nate Landwehr on the same card — one of the sport's most celebrated retirement sendoffs. Paulo Costa moved to light heavyweight and TKO'd Azamat Murzakanov. The card was one of the most eventful of the 2026 Paramount era.
Quick Stats
📅 Date: Saturday, April 11, 2026
📍 Venue: Kaseya Center, Miami, Florida, USA
🏆 Main Event: Jiri Prochazka vs. Carlos Ulberg — Vacant UFC Light Heavyweight Championship (205 lbs)
✅ Result: Ulberg def. Prochazka via KO (punches) — R1, 3:45 — Ulberg wins light heavyweight title
⚠️ Context: Ulberg blew out his right knee in the opening minute but continued to fight and finish Prochazka. He subsequently had ACL surgery.
The Build-Up
Alex Pereira had vacated the light heavyweight title to pursue the interim heavyweight championship — the Jones-Aspinall unification fight remained unbooked due to Jones's injury, and the UFC created an interim title for Pereira to challenge. Prochazka had won back-to-back KOs of Jamahal Hill and Khalil Rountree Jr. in 2025. Ulberg had ridden a nine-fight UFC win streak with big wins over Reyes, Oezdemir, and Blachowicz. Prochazka was the favourite.
Main Event: The One-Legged Champion
It was one of the most extraordinary scenes in modern UFC history. Ulberg opened with leg kicks; one of his own leg kicks in the early exchanges caused him to spin awkwardly and his right knee buckled — the ACL had blown. He was visibly struggling; Prochazka immediately targeted the injury with kicks of his own. Ulberg’s leg buckled again. Prochazka poured on the pressure with a left hook upstairs. And then — on one leg — Ulberg countered. A monster counter left hook sent Prochazka to the canvas. Ulberg followed with ground strikes; referee Herb Dean stopped the fight at 3:45.
Post-fight: 'I blew out my knee, but I never, ever counted myself out. I knew that all I need was that one shot, and I ended up getting it.' Carlos Ulberg was the UFC light heavyweight champion with a blown-out ACL. He advanced to 15-1 with his tenth consecutive win and became the second Dana White Contender Series graduate to win the light heavyweight title.
Cub Swanson's Retirement Walk-Off KO
Cub Swanson closed out a 22-year MMA career in the most fitting way possible: a first-round walk-off KO of Nate Landwehr that brought the Miami crowd to its feet. At 42, Swanson — one of the most beloved featherweights in UFC history — signed off on one of the sport’s most celebrated retirement performances.
Full Results
Main Card (Paramount+)
Carlos Ulberg def. Jiri Prochazka — KO (punches) — R1, 3:45 — Vacant Light Heavyweight Title (Performance of the Night, $100,000)
Cub Swanson def. Nate Landwehr — KO — R1 — Featherweight (Swanson's retirement fight)
Paulo Costa def. Azamat Murzakanov — TKO (head kicks) — R3 — Light Heavyweight
Vicente Luque def. Kelvin Gastelum — Submission (anaconda choke) — R1, 4:08 — Middleweight
Dominick Reyes def. Johnny Walker — Split Decision — Light Heavyweight
Preliminary Card
Aaron Pico def. Patricio Pitbull — — Featherweight (Pico's best career performance)
Tatiana Suarez def. Loopy Godinez — Submission (rear-naked choke) — R2, 2:29 — Women's Strawweight
Mateusz Gamrot def. Esteban Ribovics — Submission (arm-triangle choke) — R2, 4:19 — Lightweight
Charles Radtke def. Francisco Prado — Unanimous Decision (30-26, 30-26, 30-26) — Welterweight
Bonuses & Awards
🥇 Performance of the Night: Carlos Ulberg — $100,000 for winning the light heavyweight title on one leg in one of the most remarkable performances in UFC history.
🥇 Performance of the Night: Josh Hokit — $100,000 for a highlight-reel first-round finish on the preliminary card.
Records & Milestones
• Ulberg advanced to 15-1 with ten consecutive wins — all finishes.
• The title was vacant: Alex Pereira had relinquished to challenge for the interim heavyweight championship.
• Cub Swanson — 22-year MMA career (2004-2026) ended with a first-round walk-off KO in his retirement fight.
• Ulberg had ACL surgery shortly after UFC 327 — the first UFC light heavyweight champion to win the title with a blown-out knee in the same fight.
Legacy & Impact
UFC 327 is remembered for Ulberg's one-legged title win — one of the most dramatic and extraordinary performances in UFC history. The sequence — knee blows out, Prochazka attacks it relentlessly, Ulberg absorbs everything on one leg and then delivers a single counter left hook that ends the fight — was instantly one of the most discussed UFC moments of the decade. Ulberg's subsequent ACL surgery means his title reign began in extraordinary circumstances; the question of who he defends against when healthy became the defining light heavyweight storyline of mid-2026.
FAQ
Why was the light heavyweight title vacant going into UFC 327?
Alex Pereira had relinquished the light heavyweight title he reclaimed at UFC 320 in October 2025. He vacated the belt to challenge for the interim heavyweight championship — an attempt to capture heavyweight gold with Jon Jones still sidelined by ACL injury. The Prochazka vs. Ulberg fight was made for the vacant 205-pound belt.