Adrian Bartosiński, the undefeated KSW welterweight champion, has signed a new contract for multiple fights.

So far, he has fought seven times for the organization and he remains the undefeated dominator of the welterweight division. He assumed the throne in April 2023 and so far he managed to beat the likes of Andrzej Grzebyk, Artur Szczepaniak, Salahdine Parnasse or Igor Michaliszyn. The popular “Bartos” has already secured fifteen victories. He finished 14 of his opponents and seven times he did so as early as in the first round.

Bartosiński w zawodowym MMA zadebiutował w roku 2017. Wcześniej bił się amatorsko. Wywalczył tytuł mistrza Polski i zdobył złoty medal pucharu Polski. Gdy w końcu zdecydował się na spróbowanie swoich sił w zawodowym MMA, ruszył przez klatki jak burza. W niecałe dwa lata stoczył sześć pojedynków i wszystkie wygrał. Po tych tryumfach Adrian trafił do programu „Tylko Jeden”, gdzie dopisał do rekordu kolejne dwie wygrane, które otworzyły mu drzwi do organizacji KSW.

Bartosiński had his debut as a pro MMA fighter in 2017. Before that he competed as an amateur. He won the national championship and gold medal of the national cup. When he finally decided to go pro, he steamrolled over his competition. In less than two years, he fought six times and he won all of them. After that, Adrian joined the show called “Tylko Jeden” when he secured another two victories which led to him being signed by KSW.