Fourth seed Elina Svitolina overcame a scare to beat world number 42 Katerina Siniakova in the US Open first round.
The Ukrainian fought back from a disappointing second set to win 6-0 6-7 (5-7) 6-3 on Louis Armstrong Stadium.
Svitolina had been in control of the match before rain intervened on Tuesday, and she struggled for rhythm when play restarted on Wednesday.
“Today was a little bit of a mess in my head and it was very tough to keep the focus,” she told Eurosport.
Nicole Gibbs (USA) bat Verónica Cepede (PAR) 6-0, 1-6, 6-1
Jennifer Brady (USA) bat Andrea Petkovic (GER) 6-4, 3-6, 6-1
Monica Niculescu (ROM) bat Kristina Mladenovic (FRA/no 14) 6-3, 6-2
Kaia Kanepi (EST) bat Francesca Schiavone (ITA) 0-6, 6-4, 6-2