Image:Jelena Jankovic, a finalist back in 2008, needed less than an hour to crush Johanna Larsson 6-1 6-0 in the first match of the day on Arthur Ashe
Image:Ninth seed Jankovic has now reached the fourth round at three of the four majors this season, the exception being Wimbledon
Image:Shuai Peng knocked out 28th seed Roberta Vinci in straight sets in their third-round match
Image:Jerzy Janowicz was delighted to win the opening set in a tie-break against Kevin Anderson in the battle of the 6ft 8in players
Image:But Janowicz's joy was shortlived, 18th seed Anderson reeling off the next three sets to reach the third round
Image:Sara Errani won the opening set against former champion Venus Williams 6-0
Image:Williams, the champion in 2000 and 2001, had not previously dropped a set to Errani in three meetings and responded in kind, taking the second set 6-0
Image:Errani came from 5-3 down in the third set to clinch an epic victory in a deciding tie-break
Image:Marin Cilic, the 14th seed, cruised past Illya Marchenko in straight sets
Image:Seventh seed Grigor Dimitrov was another to enjoy a straightforward passage into round three, seeing off Dudi Sela for the loss of five games
Image:Belinda Bencic sent sixth seed Angelique Kerber packing in straight sets
Image:The shocks continued to come thick and fast in the bottom half of the women's draw, Mirjana Lucic-Baroni seeing off second seed Simona Halep 7-6 6-2
Image:Second seed Roger Federer encountered few problems in his night-session match, a straight-sets win over Sam Groth
Image:Maria Sharapova, the champion in New York eight years ago, was a 6-2 6-4 winner against Sabine Lisicki in the final match of the day
