Wawrinka, Stan vs Seppi, Andreas

Carreno-Busta, Pablo vs Gojowczyk, Peter

Delbonis, Federico vs Nadal, Rafael

Anderson, Kevin vs Fritz, Taylor

Djokovic, Novak vs Nishioka, Yoshihito

Querrey, Sam vs Sandgren, Tennys

Purcell M / Saville L vs Rojer J-J / Tecau H

Dodig I / Polasek F vs Guccione C / Reid M

Lajovic, Dusan vs Schwartzman, Diego

Delbonis F / Mayer L vs Peers J / Venus M

Klaasen R / Marach O vs Molteni A / Nys H

Paul, Tommy vs Fucsovics, Marton

Bautista-Agut, Roberto vs Cilic, Marin

Fognini, Fabio vs Pella, Guido

Raonic, Milos vs Tsitsipas, Stefanos

Federer, Roger vs Millman, John

Sharan D / Sitak A vs Pavic M / Soares B

Granollers M / Zeballos H vs Cuevas P / Pella G

Khachanov, Karen vs Ymer, Mikael

Verdasco, Fernando vs Basilashvili, Nikoloz

Rublev, Andrey vs Sugita, Yuichi

Herbert, Pierre-Hugues vs Goffin, David

Tabilo, Alejandro vs Isner, John

Bolelli S / Paire B vs Herbert P-H / Mahut N

Gonzalez M / Martin F vs Cacic N / Lajovic D

Sandgren T / Withrow J vs Demoliner M / Middelkoop M

Harris A / O'Connell C vs Duckworth J / Polmans M

Nam J S / Song M-K vs Hewitt L / Thompson J

Murray J / Skupski N vs Hurkacz H / Pospisil V

Kubot L / Melo M vs Duran G / Schwartzman D S

Cabal J S / Munar J vs Fritz T / Paul T