DHAKA: Five-time champion Roger Federer brushed aside the challenge of Germany's Philipp Kohlschreiber to reach the US Open fourth round.

Second seed Federer lost his serve for the first time since Wimbledon in a commanding 6-3 6-4 6-4 victory, reports BBC.

In the same half of the draw, fellow Swiss Stan Wawrinka and Britain's Andy Murray also progressed.

Second seed Simona Halep and fifth seed Petra Kvitova both won in straight sets.

Halep beat American qualifier Shelby Rogers 6-2 6-3, while Kvitova routed Slovakia's Anna Karolina Schmiedlova 6-2 6-1 to book a last-16 meeting with Briton Jo Konta.

Konta, 24, beat German 18th seed Andrea Petkovic 7-6 (7-2) 6-3 to extend her remarkable winning run to 16 matches.

The British number two had never been past the second round at a Grand Slam before this week.

BDST: 1207 HRS, SEP 06, 2015
RS