Benjamin Hassan will advance past Oleksandr Ovcharenko in Sion and snatch valuable ranking points. Ovcharenko arrives from two qualifying victories, beating Petros Tsitsipas 7-5, 6-4 on August 16 and edging Dimitris Sakellaridis 3-6, 6-3, 6-4 on August 17, and he is listed at No. 617 in the ATP ran…