Two-time Grand Slam champion Simona Halep made the most of a change in schedule to win her US Open second-round match on Arthur Ashe Stadium.
Romanian Halep, 29, has struggled with injuries this year but comfortably beat Slovakia's Kristina Kucova 6-3 6-1.
She was moved from an outside court on Wednesday after defending champion Naomi Osaka was handed a walkover.
Playing under a roof, Halep was able to avoid the rain which interrupted several other matches.
"I was a little bit lucky to play here with the roof," said the 12th seed, who will face Elena Rybakina of Kazakhstan or Caroline Garcia of France in the third round.