(1) Sandgren, Tennys vs Bye
Popyrin, Alexei vs Saville, Luke
Gigante, Matteo vs Ivashka, Ilya
(WC) Darderi, Luciano vs (9) Sousa, Joao
(2) Simon, Gilles vs Bye
Cobolli, Flavio vs Koepfer, Dominik
Kukushkin, Mikhail vs Ymer, Elias
Daniel, Taro vs (16) Monteiro, Thiago
(3) Bedene, Aljaz vs Bye
Donskoy, Evgeny vs Kovalik, Jozef
Seppi, Andreas vs Klahn, Bradley
Cecchinato, Marco vs (12) Gerasimov, Egor
(4) Bublik, Alexander vs Mayer, Leonardo
Zapata Miralles, Bernabe vs (WC) Musetti, Lorenzo
Dellien, Hugo vs Giannessi, Alessandro
Zeppieri, Giulio vs (14) Norrie, Cameron
(5) Verdasco, Fernando vs Dzumhur, Damir
Robredo, Tommy vs Moroni, Gian Marco
Lorenzi, Paolo vs Coria, Federico
Diez, Steven vs (10) Albot, Radu
(6) Paul, Tommy vs Bagnis, Facundo
Duckworth, James vs Uchiyama, Yasutaka
Gulbis, Ernests vs Polmans, Marc
Giron, Marcos vs (11) Ymer, Mikael
(7) Chardy, Jeremy vs (Alt) Venus, Michael
Martin, Andrej vs Galan, Daniel Elahi
(WC) Forti, Francesco vs Martinez, Pedro
Viola, Matteo vs (13) Kwon, Soonwoo
(8) Londero, Juan Ignacio vs Davidovich Fokina, Alejandro
Sugita, Yuichi vs Harris, Lloyd
Horansky, Filip vs Marcora, Roberto
Carballes Baena, Roberto vs (15) Moutet, Corentin
