Ny (AFP) - Rafael Nadal launched his tilt at a fourth US Open identify Tuesday with a swift defeat of John Millman as different main seeds in his half of of the draw tumbled out in the first spherical.

four gamers inside the international s top 10 -- Dominic Thiem, Stefanos Tsitsipas, Karen Khachanov and Roberto Bautista Agut -- lost Tuesday to ease Nadal s capability route to the very last.

The Spanish second seed -- US Open champion in 2010, 2013 and 2017 -- needed slightly two hours to see Millman off 6-three, 6-2, 6-2 at Arthur Ashe Stadium with the world variety 60 from Australia unable to reproduce the magic that saw him stun Roger Federer right here a year in the past.

.

"the beginning, the primary fit, is always a bit bit new even though I ve played here masses of times," said Nadal, who meets Aussie Thanasi Kokkinakis next. "I suppose I performed nicely and in preferred am very satisfied with the manner I began.

"He (Millman) showed final 12 months what he s able to do while he s doing properly and that i came on court docket with a variety of admire."

-time French Open runner-up Thiem become disappointed through Italian giant-killer Thomas Fabbiano 6-four, 3-6, 6-3, 6-2, because the Austrian slumped to any other first-spherical go out, having lost at the equal degree at Wimbledon.

"I got very tired and exhausted after two sets. I m a ways far from a hundred percent," Thiem stated. "It became no longer the actual me there on the court."

Greek eighth seed Tsitsipas struggled with cramps and accused umpires of having "possibilities" after he fell to a 6-four, 6-7 (five/7), 7-6 (nine/7), 7-five defeat via next Gen rival Andrey Rublev in a gruelling four-hour slog.

Tsitsipas, for whom it become additionally a 2d successive Grand Slam opening-round defeat, became hit with a point penalty for a time violation within the final set.

"This chair umpire, I don t recognise, he has some thing in opposition to me. I don t realize why," said Tsitsipas, who snapped "you re all weirdos" at French reputable Damien Dumusois throughout his match.

"I wish that all the chair umpires had been like Mohamed Lahyani because I consider he s the pleasant out in the sport, and we need more like him in tennis due to the fact he s honest to everyone. I experience like some of them have options while they are at the court."

Russian 9th seed Khachanov misplaced to Canada s Vasek Pospisil in 5 sets, with tenth seed Bautista Agut of Spain succumbing in comparable fashion to Mikhail Kukushkin of Kazakhstan to depart that zone of the draw, which capabilities Nick Kyrgios, huge open.

Alexander Zverev, seeded sixth, battled into the second spherical through defeating Moldova s Radu Albot 6-1, 6-3, 3-6, 4-6, 6-2, while Marin Cilic, the 2014 champion, advanced in instantly sets over Slovakia s Martin Klizan.

Reigning girls s US Open champion Naomi Osaka confronted intense nerves to return through in 3 hard units towards Russia s Anna Blinkova, the arena wide variety eighty four.

Osaka suffered a first-spherical go out closing month at Wimbledon and the japanese big name struggled to place away Blinkova earlier than triumphing 6-four, 6-7 (5/7), 6-2.

"i have a lot of truly correct recollections right here because I grew up on this location. I don t suppose I ve ever been this frightened in my lifestyles," said Osaka, wearing a black brace at the left knee that brought about her to retire in Cincinnati.

"You need to do properly after you did well ultimate 12 months. I certainly didn t want to lose inside the third set."

The top seed is going on to face Poland s Magda Linette.

Osaka must retain her US Open crown to have a risk of last world number one and changed into tested notably through 2015 Wimbledon junior finalist Blinkova, who raced 4-1 in advance inside the first set and stored a match point in the 2d to force a decider.

Wimbledon champion Simona Halep, ousted within the establishing spherical the past years at Flushing Meadows, outlasted US lucky loser Nicole Gibbs 6-3, three-6, 6-2.

"I sense plenty better that I may want to win a healthy sooner or later on this event," Halep said. "I m no longer feeling awesome at the beginning of the event. But usually after I performed tough matches at the beginning, then I went thru the semi-finals or quarter-finals. So I m confident. I feel like my sport, it s there."

Fifteen-yr-vintage Wimbledon sensation Coco Gauff edged beyond Anastasia Potapova, 18, in 3 units on her US Open debut.