Billstein is 27 years. As a pro, he made his debut at 18 at a tournament in Cologne. Since then, he had 26 fights, 20 of which he won, and one fight was declared a draw. Like Shlemenko, Billstein performed at Bellator, but he only had four fights there. Last year Billstein had two fights in Russia in the ACB league - he won both fights, but then returned to Europe, where he is the strongest middleweight athlete for now.
Alexander Shlemenko has 56 victories in 68 matches, the title of Bellator champion and the victories in Bellator Grand Prix and M-1 Global. In addition, he is among the five strongest middle weights in Russia.