Jean-Paul Lebosnoyani delivered a brutal knockout in his UFC welterweight debut at UFC Vegas 123, ending Farman Hasanov’s unbeaten streak with a devastating facial injury. The fight, part of the main card, saw Lebosnoyani (11-2) secure his first UFC finish after two prior decision wins, while Hasanov—who entered the bout undefeated—suffered a graphic stoppage that echoed past high-profile cuts in the promotion.
The event also featured other standout performances, including Julian Erosa’s emotional retirement bout and Lucia Szabova’s stoppage win in her UFC debut, marking a night of dramatic finishes across multiple weight classes.
UFC Vegas 123, held under the Fight Night 292 banner, kicked off with a series of explosive matchups, including the welterweight clash that dominated early headlines. The card took place at Meta Apex in Las Vegas, where multiple fighters delivered knockout victories, underscoring the promotion’s commitment to high-octane action.
Lebosnoyani’s victory, in particular, stood out for its brutality, with the referee stepping in to halt the fight after Hasanov’s face was severely compromised.

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