The last time Adam Kownacki was in the ring in January, knocking Gerald Washington out. Robert Helenius won the title of European champion as a pro. He lost twice, to Johann Duhaupas and Dillian Whyte.
In recent weeks, Helenius was one of the main sparring partners of Deontay Wilder before the fight against Dominic Breazeal. The Fin in his last professional performance beat Erkan Teper.
The main event of the August evening is a welterweight fight between Errol Spence Jr and Shawn Porter. The titles of WBC and IBF will be at stake. The evening will be shown in the US by FOX TV.