Iga Swiatek scrapped her way into the third round of the US Open on Thursday with a three-set win over Suzan Lamens as Jannik Sinner sought to keep his title defence on track.

World number two Swiatek looked to be cruising as she led her Dutch opponent by a set and a break but stumbled before eventually seeing off the 66th-ranked Lamens 6-1, 4-6, 6-4.

"It wasn't an easy match. I did some mistakes," said Swiatek.

"I felt like it depended on me and if I made mistakes or not, sometimes I did. I probably got a little tight in the second set.

"But the third set is a reset. You've got to start from the beginning and I knew I could play a little more precisely, so I just tried to do that."

Swiatek, the 2022 US Open champion, has won 16 of 17 matches following titles at Wimbledon and Cincinna

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