Olympic gold medallist Zheng, defending champion Gauff win 1st-round matches at U.S. Open

Coco Gauff had an easy start to her U.S. Open title defence, rolling to a 6-2, 6-0 victory over Varvara Gracheva on Monday.

Gauff needed just over an hour, looking more like the player who won her first major title last year at age 19 than the one who had dropped her last two matches before coming to New York.

Zheng Qinwen, the Olympic gold medallist in women's tennis, stayed in the tournament by rallying for a 4-6, 6-4, 6-2 victory over Amanda Anisimova.

Zheng began the Grand Slam season by reaching the final of the Australian Open. She had a difficult assignment to start the year's final major in Anisimova, an American who earlier this month reached the final of a hard-court warmup tournament in Montreal and returned to the top 50 of the WTA rankings.

But the No. 7 seed from China solved Anisimova's power as the match went on to move into the second round as she turns her attention back to the Grand Slams after becoming China's first singles gold medallist at the Paris Olympics.

"You have the first one, of course you're going to stay a long time in the successful feeling. I did that in the Australian Open but I was just in the final, and the effect takes me so long to come back to reality," Zheng said.

Maria Sakkari, the No. 9 seed from Greece, became the first seeded player to be eliminated when she stopped playing after losing the first set against China's Wang Yafan. Sakkari, who also lost in the first round last year at Flushing Meadows, received treatment on her shoulder in the first set.

Men's winners Monday included No. 4 Alexander Zverev, No. 6 Andrey Rublev, No. 8 Casper Ruud, and Americans Taylor Fritz and Ben Shelton, the Nos. 12 and 13 seeds. Shelton eliminated 2020 U.S. Open champion Dominic Thiem, who was