The main event of KSW 73 will feature a heavyweight collision between two of Poland's most famous and decorated kickboxers who are both now venturing into the MMA arena.

Former Glory kickboxing heavyweight star Arkadiusz Wrzosek (0-0) makes his MMA debut against Tomasz Sarara (1-0) and it is live this Saturday, August 20 on www.KSWTV.com,the KSW App, and exclusively on Viaplay in Poland, the Netherlands, Scandinavia, and the Baltics.

Wrzosek joined KSW earlier this year after a successful run in Glory kickboxing which saw his score a head kick KO win over the legendary Badr Hari, a finish which was awarded 'KO of the Year' in the promotion for 2021. 

The 30-year-old will now transition to MMA after almost a ten year career in kickboxing, one that saw him capture a number of Polish, European, and international titles at both the amateur and professional ranks. To help him prepare for his MMA debut, Wrzosek called upon the help of Alistair Overeem and has been training out of Hemmer's Gym in the Netherlands. 

His opponent for KSW 73 will be fellow kickboxer-turned MMA fighter Tomasz Sarara. The 37-year-old is a near fifty-fight kickboxing veteran and a student of the great Ernesto Hoost. He made his KSW & MMA debut last year with a third round TKO win over Croatia's Filip Bradaric in a huge come from behind victory.