Updated

Lukas Rosol, Czech Republic, vs. Rafael Nadal (2), Spain

Angelique Kerber (9), Germany, vs. Heather Watson, Britain

Gilles Muller, Luxembourg, vs. Roger Federer (4), Switzerland

Serena Williams (1), United States, vs. Chanelle Scheepers, South Africa

Stan Wawrinka (5), Switzerland, vs. Yen-hsun Lu, Taiwan

Timea Bacsinszky, Switzerland, vs. Maria Sharapova (5), Russia

Richard Gasquet (13), France, vs. Nick Kyrgios, Australia

Silvia Soler-Espinosa, Spain, vs. Eugenie Bouchard (13), Canada

Jerzy Janowicz (15), Poland, vs. Lleyton Hewitt, Australia

Simona Halep (3), Romania, vs. Lesia Tsurenko, Ukraine

Milos Raonic (8), Canada, vs. Jack Sock, United States

Ana Ivanovic (11), Serbia, vs. Zheng Jie, China

Karolina Pliskova, Czech Republic, vs. Sabine Lisicki (19), Germany

Jarkko Nieminen, Finland, vs. John Isner (9), United States