Stefanos Tsitsipas Jan-Lennard Struff Fabio Fognini Hamad Medjedovic Leandro Riedi Daniel Elahi Galan Juan Pablo Varillas Quentin Halys Matteo Berrettini Botic Van De Zandschulp Stan Wawrinka Damir Dzumhur Pedro Cachin Yannick Hanfmann Lukas Klein Stefano Napolitano Dominic Stricker Gustavo Heide