Coco Gauff was the youngest player to reach the third round of the US Open since 1996 – defeating seed and defending champion Naomi Osaka.
Gauff, a 15-year-old from Florida, Timea Babos of Hungary won 6: 2, 4: 6 and 6: 4 against Gauff on Thursday night when he played the last game of the almost two-and-a-half hour game at Flushing Meadows in New York denied.
The partisans at Louis Armstrong Stadium supported Gauff loudly and singing: "Let's go, Coco!" During the last changeover.
"This is just the beginning, I promise," she told the crowd afterwards.
"I'm just so happy that I was able to get through it," said Gauff. " She played amazing.
"It was the kind of match that everyone could have won."
Gauff advancing to fourth round at Wimbledon In her Grand Slam debut last month, she is scheduled to play Osaka on Saturday.
Another young American made waves on Thursday at the Open.
Taylor Townsend, a 23-year-old qualifier, finished 116th and celebrated the biggest win of her career with a fun, glittering serve and volleyball brand that surprised former number 1 Simona Halep 2. 6, 6-3, 7-6 (4) in the second round at Flushing Meadows.
"It was a long way, lots of haters, a lot of people who were not sure, I've really heard for a long time that I would never make it, that I could not break through or do this or that," Townsend said. "This was a huge, monumental moment. It was a very pivotal moment for me to realize that I belong here. "