'Insane': Fighters react to Carlos Ulberg's title KO of Jiri Prochazka at UFC 327

Carlos Ulberg completed his journey to gold on Saturday when he defeated Jiri Prochazka in the UFC 327 main event. With Alex Pereira moving to heavyweight, Ulberg (13-1 MMA, 10-1 UFC) started a new era in the light heavyweight division with a stunning come-from-behind knockout victory in the first round over Prochazka (32-6-1 MMA, 6-3 UFC) to capture the vacant belt at Kaseya Center in Miami. Check below for the top X (formerly Twitter) reactions to Ulberg beating Prochazka at UFC 327.

Ready for their chance at gold 🏆@Jiri\_BJP & @UlbergCarlos have arrived for their main-event matchup!

[ #UFC327 | LIVE NOW on @CBS & @ParamountPlus ] pic.twitter.com/LTb8NL4bII

— UFC (@ufc) April 12, 2026 Both are coming for the belt😤

@Jiri\_BJP vs @UlbergCarlos

[ #UFC327 | LIVE NOW on @ParamountPlus ] pic.twitter.com/UqQHYVkBOS

— UFC (@ufc) April 12, 2026 IT'S TIME 👊

[ #UFC327 | LIVE NOW on @ParamountPlus ] pic.twitter.com/aVCL0tqUKU

— UFC (@ufc) April 12, 2026 Ulberg appears to have hurt his leg in one of the opening exchanges. Not ideal #UFC327

— Nolan King (@mma\_kings) April 12, 2026 Woooow

— Belal Muhammad (@bullyb170) April 12, 2026 Are. You. Kidding. Me.

Did Ulberg just win the UFC belt on one leg and then limp off on some Robbie Lawler shit??

— Ben Fowlkes (@benfowlkesMMA) April 12, 2026 Now he’s walking like a champ

— Belal Muhammad (@bullyb170) April 12, 2026 Yuri , what in the IQ was that …. ! 😂😂😂😂 #UFC327

— Derek Brunson (@DerekBrunson) April 12, 2026 HOLY SHIT! Congrats @UlbergCarlos#UFC327

— Dustin Jacoby 🇺🇸 (@thehanyakdj) April 12, 2026 That is all-time insanity!!! This sport is madness. Ulberg on one leg!!! 🤯🤯🤯#UFC327

— John Morgan (@JohnMorgan\_MMA) April 12, 2026 That's the craziest result ever in a title fight. That could have been stopped between rounds the way Ulberg was limping around. Unreal moment. #UFC327

— Matthew Wells (@MrMWells) April 12, 2026 Poor Jiri!

— GILBERT BURNS DURINHO (@GilbertDurinho) April 12, 2026 #UFC327 results: Carlos Ulberg def. Jiri Prochazka via knockout (punches) – Round 1, 3:45 – to win vacant light heavyweight title

Full coverage: pic.twitter.com/kOrWMZ5iEY

— MMA Junkie (@MMAJunkie) April 12, 2026 THE BLACK JAG ERA IS HERE 🏆🇳🇿

Carlos Ulberg defeats Jiri Prochazka by knockout to become the LIGHT HEAVYWEIGHT CHAMPION OF THE WORLD!

[ B2YB: @STC\_Canada ] pic.twitter.com/mcKErONBxk

— UFC (@ufc) April 12, 2026 We were all Hunter Campbell in this moment. 👀 #UFC327pic.twitter.com/GOYuVZf6RB

— Simon Samano (@SJSamano) April 12, 2026 And new KING 👑 LOS best in the fkn world congratulations @carlosulberg and the team wat a fkn way to take it cheeee huuuu pic.twitter.com/25tX8WiO4I

— mark richard hunt (@markhunt1974) April 12, 2026 Jiri Prochazka says showed mercy on Carlos Ulberg and it led to his demise 😢 #UFC327pic.twitter.com/LHw3ZkeQI2

— MMA Junkie (@MMAJunkie) April 12, 2026 Tibia shifts forward from ACL being torn, then the calf rippling is when the tibia shifts back pic.twitter.com/MsfjbZ6peJ

— Brian Sutterer MD (@BrianSuttererMD) April 12, 2026 *This article originally appeared on MMA Junkie: UFC 327: Fighters react to Carlos Ulberg's wild KO of Jiri Prochazka*