Coco Gauff marches on, Victoria Azarenka battles through migraine at US Open

Defending champion Coco Gauff breezed into the third round of the US Open after a straight-sets win over veteran Tatjana Maria.

The 2023 champion, who said on Monday she will one day win a second title at Flushing Meadows is looking a good bet to do it this year after winning 6-4 6-0.

Her victory included an outrageous shot at the end of the first set where a volley spun so viciously it hit the umpire's chair and denied Maria what would have been a clear winner.

Gauff said of her win: "I played well overall, I could serve better, I think it could have made the first set a lot easier.

"I am not feeling pressure, I have nothing to lose, I am 20 years old, I already have one grand slam under the belt, whether or not it’s this year, I have the potential to do more."

Victoria Azarenka battled through a migraine to see off Frenchwoman Clara Burel.

The 20th seed, three-time runner-up at Flushing Meadows looked to be in trouble when she had to have a medical timeout midway through the second set.

She had won the first set but was trailing 3-1 in the second when she began rubbing her temples and eyes.

The Belarussian told the doctor she was seeing spots in her eyes and later confirmed she was suffering from a migraine.

But the medical timeout seemed to affect Burel more than Azarenka as the Frenchwoman’s game crumbled.

Azarenka claimed the 6-1 6-4 victory before breaking down in tears.

"It is very tough to be out here, I don’t know how I played the match, I just hoped it would get better," she said.

"I have a chronic migraine and it couldn’t be a worse time to start it, it’s tough to deal with."

Heat exhaustion ruined Iva Jokic’s teenage dream of a third-round meeting with Aryna Sabalenka.

American Jokic, who is 16 and the youngest player in