Sandro Kopp will advance past Benjamin Hassan in the Sion Challenger 2nd round on August 19, 2026 on Center Court. Kopp arrives as ATP 280 after beating Luca Wiedenmann 6-4, 6-1 to reach round two, and he owns the lone prior H2H win over Hassan, a 2-0 victory in Ortisei in 2022. Benjamin Hassan has…