Daniil Medvedev was back to his winning ways on hard court, beating Hugo Gaston 6-4, 6-2, 6-4 in the first round of the US Open on Sunday after struggling earlier in the North American swing.
Medvedev, the 2021 US Open champion who typically dominates on hard court, went just 1-3 in the tuneup tournaments leading up to the Slam.
"Last couple of weeks was not easy," Medvedev said. "But I'm happy that I managed to produce high-level tennis."
Meanwhile, American Tommy Paul bounced back from losing a first-set tiebreak to Coleman Wong to win 6-7 (3), 6-1, 6-3, 6-3. Wong a year ago became the first man from Hong Kong to win an Open-era Grand Slam men's singles match on the way to reaching the round of 32.
Seven matches in total couldn't be completed because of rain -- and one was delayed even though it was being played in the other stadium with a retractable roof. There was a mechanical issue with one of the sensors at Louis Armstrong Stadium, and even after the roof finally closed, the court had to be dried before No. 15 seed Alexander Bublik beat J.J. Wolf.
Marin Cilic, the 2014 US Open champion, and 2022 runner-up Casper Ruud both withdrew with injuries.
Several of the main draws on the men's side, including Carlos Alcaraz, Ben Shelton, Felix Auger-Aliassime, Frances Tiafoe and Stan Wawrinka, have matches scheduled for Monday.
The Associated Press contributed to this report.
