Kvitova into first US Open quarters

New York - Czech fifth seed Petra Kvitova reached her first US Open quarter-final on Monday with a 7-5, 6-3 win over British qualifier Johanna Konta.

Kvitova will face Italy's Flavia Pennetta for a place in the semi-finals.

US Open results on Monday, the eighth day of the 2015 tournament at Flushing Meadows (x denotes seeded player):

Men

Fourth round

Stan Wawrinka (SUI x5) bt Donald Young (USA) 6-4, 1-6, 6-3, 6-4

Kevin Anderson (RSA x15) bt Andy Murray (GBR x3) 7-6 (7/5), 6-3, 6-7 (2/7), 7-6 (7/0)

Richard Gasquet (FRA x12) bt Tomas Berdych (CZE x6) 2-6, 6-3, 6-4, 6-1

Roger Federer (SUI x2) bt John Isner (USA x13) 7-6 (7/0), 7-6 (8/6), 7-5

Women

Fourth round

Petra Kvitova (CZE x5) bt Johanna Konta (GBR) 7-5, 6-3

Flavia Pennetta (ITA x26) bt Samantha Stosur (AUS x22) 6-4, 6-4

Victoria Azarenka (BLR x20) bt Varvara Lepchenko (USA) 6-3, 6-4

Simona Halep (ROM x2) bt Sabine Lisicki (GER x24) 6-7 (6/8), 7-5, 6-2

Mixed doubles

Quarter-finals

Martina Hingis/Leander Paes (SUI/IND x4) bt Simona Halep/Horia Tecau (ROM) - walkover

Yung-Jan Chan/Rohan Bopanna (TPE/IND x2) bt Su-Wei Hsieh/Henri Kontinen (TPE/FIN) 7-6 (9/7), 5-7, 13-11