Top seed Jannik Sinner left the doping controversy that marred his U.S. Open preparations in the rear view mirror on Tuesday with a largely drama-free start to his campaign while fellow title contender Carlos Alcaraz also advanced after a minor blip.
Women's top seed Iga Swiatek overcame Kamilla Rakhimova 6-4 7-6(6) to reach the second round before two-times champion Naomi Osaka stunned 10th seed Jelena Ostapenko 6-3 6-2 on her return to New York after a maternity break.
The spotlight was firmly on Sinner in the day session as the Italian overcame a slow start to seal a 2-6 6-2 6-1 6-2 win over American Mackenzie McDonald a week after he was cleared of any wrongdoing over two failed tests in March for a banned drug.
Sinner, who has maintained his innocence, has been under intense scrutiny after escaping a doping ban but the 23-year-old was pleased to have the backing of fans on Arthur Ashe Stadium.
Alcaraz, another Flushing Meadows crowd favourite, gifted Australian qualifier Li Tu a set but the 2022 champion steadied the ship before closing out a 6-2 4-6 6-3 6-1 victory inside three hours.
Osaka returns
Twice U.S. Open winner Naomi Osaka played like a tennis superhero on Tuesday, but instead of a cape, her super suit had bows.
She set the tennis world and the internet ablaze as she stepped out on Louis Armstrong Stadium donning a custom-made Nike kit designed by Yoon Ahn featuring a ruffled skirt and a jacket, shoes and headphones adorned in matching bows.
"I think for me when I put on the outfit it's almost like a super suit, so I try to channel that," the former world number one said.
Sinner overcomes
Top-seeded Italian Jannik Sinner shrugged off the doping furore surrounding him and overcame a bad start to reach the second round of the U.S. Open with a 2-6 6-2 6-1 6-2 victory over American Mackenzie McDonald on Tuesday.
Sinner, who became embroiled in controversy in the week before the year's final Grand Slam after the International Tennis Integrity Agency said that he tested positive twice for an anabolic agent in March, was slow out of the starting blocks.
Swiatek survives error-filled
Women top seed Iga Swiatek overcame a slew of unforced errors to secure her spot in the second round of the U.S. Open with a 6-4 7-6(6) victory over Russian lucky loser Kamilla Rakhimova on Tuesday.
Swiatek, who counts the 2022 U.S. Open among her five Grand Slam titles, converted three of six break-point chances but also racked up 41 unforced errors en route to securing the victory in one hour and 52 minutes at Arthur Ashe Stadium.
Swiatek built a 4-0 double break lead and looked poised to run away with an easy win but Rakhimova consolidated a break to get within a game before Swiatek went on to seal the first set with her third love hold of the match.