FRIDAY’S KEY RESULTS

Men — Novak Djokovic (1) def. Mikhail Youzhny, 4-2, retired; Rafael Nadal (4) def. Andrey Kuznetsov, 6-1, 6-4, 6-2; Jack Sock (26) def. Marin Cilic (7), 6-4, 6-3, 6-3; Jo-Wilfried Tsonga (9) def. Kevin Anderson (23), 6-3, 6-4, 7-6 (7-4); Gael Monfils (10) def. Nicolas Almagro, 6-4, 6-2, 6-4; Lucas Pouille (24) def. Roberto Bautista Agut (15), 3-6, 7-5, 2-6, 7-5, 6-1; Kyle Edmund def. John Isner (20), 6-4, 3-6, 6-2, 7-6 (7-5).

Women — Angelique Kerber (2) def. CiCi Bellis, 6-1, 6-1; Roberta Vinci (7) def. Carina Witthoeft, 6-0, 5-7, 6-3; Madison Keys (8) def. Naomi Osaka, 7-5, 4-6, 7-6 (7-3); Lesia Tsurenko def. Dominika Cibulkova (12), 3-6, 6-3, 6-4; Johanna Konta (13) def. Belinda Bencic (24), 6-2, 6-1; Petra Kvitova (14) def. Elina Svitolina (22), 6-3, 6-4; Caroline Wozniacki def. Monica Niculescu, 6-3, 6-1.

SATURDAY’S FEATURE MATCHES

(TV: 11 a.m., ESPN2; 7 p.m., ESPN2)

Men — Paolo Lorenzi vs. Andy Murray (2); Daniel Evans vs. Stan Wawrinka (3); Kei Nishikori (6) vs. Nicolas Mahut; Juan Martin del Potro vs. David Ferrer (11); Nick Kyrgios (14) vs. Illya Marchenko.

Women — Serena Williams (1) vs. Johanna Larsson; Agnieszka Radwanska (4) vs. Caroline Garcia (25); Timea Babos (31) vs. Simona Halep (5); Laura Siegemund (26) vs. Venus Williams (6).