首日赛程中，男子只有锦织圭晋级，其他三人落败。
女单部分晋级三人，六人落败。
GENTLEMEN'S SINGLES - FIRST ROUND
锦织圭 Kei Nishikori (JPN) [9] defeated Marco Cecchinato (ITA) 6-2 6-2 6-0
Andy Murray (GBR) [1] defeated Alexander Bublik (KAZ) 6-1 6-4 6-2
Simone Bolelli (ITA) defeated 卢彦勋 Yen-Hsun Lu (TPE) 6-3 1-6 6-3 6-4
Donald Young (USA) defeated Denis Istomin (UZB) 5-7 6-4 6-4 4-2 RET.
LADIES' SINGLES - FIRST ROUND
彭帅 Shuai Peng (CHN) defeated Marketa Vondrousova (CZE)6-7(5) 6-0 6-4
大坂なおみ Naomi Osaka (JPN) defeated Sara Sorribes Tormo (ESP)6-3 7-6(3)
王蔷 Qiang Wang (CHN) defeated 张凯贞 Kai-Chen Chang (TPE) 6-3 6-4
Johanna Konta (GBR) [6] defeated 谢淑薇 Su-Wei Hsieh (TPE) 6-2 6-2
Madison Keys (USA) [17] defeated 日比野菜绪 Nao Hibino (JPN) 6-4 6-2
Ana Bogdan (ROU) defeated 段莹莹 Ying-Ying Duan (CHN) 6-4 6-2
Francoise Abanda (CAN) defeated 奈良くるみ Kurumi Nara (JPN) 6-2 6-4
Anastasija Sevastova (LAT) [18] defeated Yulia Putintseva (KAZ) 6-1 7-6(3)