Second seed Roger Federer defied a windy condition to sail into the last 8 of the US Open on Tuesday, as 10th seed Caroline Wozniacki dominated Sara Errani en route to her first Grand Slam semi-final in three years in the bottom half of the women’s draw.

Earlier, Peng Shuai became the third Chinese to make a Grand Slam last 4 after a comfortable win over rising start Belinda Bencic.

Frenchman Gael Monfils reached his second US Open quarter-final since 2010 with a roaring win over the youngest player in the men’s Top 10 ranking Grigor Dmitrov.

Monfil’s compatriot Gael Simons lost a four-setter to Coatia’s Marin Cilic and Tomas Berdych proved a handful for the only unseeded left, Thomas Thiem, 20.