A new KSW welterweight champion will be crowned in the main event of XTB KSW 81 on April 22 as the undefeated Adrian Bartosinski (13-0) meets the explosive Artur Szczepaniak (9-1). 

Bartosinski joined the KSW roster in 2021 following his successful run on the KSW reality TV show “Only One.” The 27-year-old won all his fights on the show but was ruled from the finale due to injury. As a result, he ended up making his promotional debut at KSW 59 and has won all four of his fights via stoppage to earn his spot to compete for the vacant title. 

On the other side of the title fight is Szczepaniak. The Belgium-based Pole burst into KSW last year with two first round stoppage victories. Most recently, he finished Brian Hooi with a “Knockout of the Night” winning headkick in less than a minute at KSW 76 and now the 26-year-old has his sights on becoming the next KSW welterweight champion.

Also announced for the card is a heavyweight collision between former Polish muay Thai and kickboxing champion Tomasz Sarara (1-1) and Dutch kickboxing legend Errol Zimmerman (0-1). The duo will meet under MMA rules and promises to be fireworks. 

XTB KSW 81 takes place April 22 from the Arena Lodowa in Tomaszow Mazowiecki, Poland, and will be available to watch live on KSWTV.com and the KSW app and exclusively on Viaplay in Poland, the Netherlands, the U.K., Scandinavia and the Baltics.