But it's clear there's something happening out here in Queens - and it will only get bigger on Saturday in the world's biggest tennis stadium against the top-seeded Osaka, who has been compromised by a knee injury that forced her to retire from a quarter-final match in Cincinnati less than two weeks ago.
Osaka has become the No. 1 player in the world since beating Serena Williams in the final of last year's U.S. Open, adding the Australian Open title to her short resume.
Gauff, who flaunted a refreshing fall print on court, arrived for her post-match media interaction in a white tee that screamed, "call me Coco".
Following her victory in a brutal battle with Timea Babos on Thursday, John McEnroe was quick to warn how a Gauff triumph in the match everyone hoped to see may be too much, too soon for the 15-year-old sensation.
"I want all of you to know, when you sleep tonight, I won because of you". "I'm just so happy to get through", Gauff said as chants of her name rang out around Louis Armstrong Stadium. "I had to dig really deep".
He almost got there previous year in Flushing Meadows, but blew a two-set lead against Marin Cilic and lost to the 2014 champion in five sets. I think for some years I was lost, lost in a sea of a lot of stuff. It nearly didn't matter who won - the Kyrgios-Copil team managed to beat Marcus Daniell and Ken Skupski 6-7 (5), 7-5, 7-6 (1) - because the more-than-half-empty afternoon crowd in Arthur Ashe Stadium appeared to get what it came for. Gauff and the belief she has in herself could be just enough to pull this off. Osaka hasn't been herself this year.
Those, too, were dealt with in short order: Townsend produced consecutive aces, her fourth and fifth of the day, to reach match point, whereupon another unreturnable serve sealed a berth in the fourth round against either No.15 seed Bianca Andreescu or No.19 seed Caroline Wozniacki.
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There should be three different models: Two with OLED screens in 5.8- and 6.5-inch sizes; and one LCD iPhone that's 6.1 inches. The wide-angle lens has been a constant fixture in all the triple camera set ups launched so far.
That Serena Williams came back to beat 17-year-old Caty McNally at the U.S. Open after dropping their opening set shouldn't have come as a surprise: No one in the history of professional tennis has been as good as Williams at that sort of turnaround.
There's no match history between these two players.
Gauff is the game's rising star, and clearly the fan favorite at the US Open.
"I'm really grateful they came out", Osaka said. "I mean, I've heard it for a really long time that I was never going to make it, that I wasn't going to be able to break through or do this or do that", Townsend said. "I definitely would love that".
Gauff said their fathers had come to know each other and that they regularly have conversations. She'll be looking for a major upset as she takes on the No. 1 player Naomi Osaka. "I think that's pretty awesome". "I'm just curious how my game matches up against her".
Osaka's first-round matchup presented some issues with her, but she prevailed 6-4, 6-7 (5-7), 6-2. But today was different. She wasn't really talking to anyone, ' recalled the top seed.