Shelton set to face Wawrinka, Tsitsipas gears up for match against Van de Zandschulp
Getty Images American star Ben Shelton will be in second-round action at the ATP 500 in Basel against home favorite Stan Wawrinka on Thursday. Meanwhile, Stefanos Tsitsipas takes Botic van de Zandschulp for a spot in the quarterfinals. (3) Stefanos Tsitsipas vs. (Q) Botic van de Zandschulp Perennial top-10 player Stefanos Tsitsipas has been on…