British number one Johanna Konta overcame a challenging first set to beat compatriot Heather Watson 7-6 (9-7) 6-1 and advance to the US Open second round.
Konta, 29, was made to work hard for the first set, saving six set points before winning a tie-break.
But the ninth seed then took command, dropping just one game in the second.
Konta will look to improve on her 2019 quarter-finals appearance given six of the world's top 10 women are absent.
More to follow.