Sinner stuns in 98-minute ruthless romp

Swiatek smashes, then swoons for Swift

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World No.1 Jannik Sinner began his bid for back-to-back US Open titles with an emphatic victory on Tuesday as women's draw favourite Iga Swiatek swept into the second round.

Italian star Sinner waltzed to a 6-1, 6-1, 6-2 win over Czech world No.89 Vit Kopriva, needing just 1hr 38min to advance to the next round.

"It feels great to be back here. Obviously it's a very special tournament," said Sinner, who is attempting to become the first man to repeat as US Open champion since Roger Federer won five in a row from 2004-2008.

Sinner, 24, faces Alexei Popyrin in the third round.

"I'm very happy that I'm healthy again," said Sinner, who was forced to retire from last week's Cincinnati Open final against Carlos Alcaraz.

"I have amazing memories [from last year]. Every year is different. You come here starting this tournament hopefully in the best possible way, which I did," he added.

Sinner's blistering start on the Arthur Ashe Stadium court was matched by Poland's Swiatek, who was similarly emphatic in a 6-1, 6-2 rout of Colombia's Emiliana Arango.