NEW YORK — Alison Riske, an unseeded 23-year-old from Pittsburgh, showed no nerves and had plenty of big ground strokes in upsetting seventh-seeded and former
Riske is part of a large group of young American women making their presence felt at this Grand Slam event, including 20-year-old
There was also 17-year-old Victoria Duval, who eliminated former U.S. Open champion
A young Italian woman made some noise Saturday night. Qualifier Camila Giorgi, 21, ranked No. 136 in the world, took 2009 U.S. Open finalist
"It was really emotional for me," Riske said of the win over Kvitova. "It's just really cool because I feel like I'm playing within myself. I'm not doing anything crazy. It just feels really comfortable. It's exciting."
Riske celebrated by hitting balls into the stands and squealing with excitement.
Kvitova, who suffers from
McHale, from Teaneck, N.J., who stays at home during the Open, saw her ranking drop below 100 this year after she missed much of last season with mononucleosis. McHale has said it's taken her almost until now to rebuild her strength and stamina.
Kvitova said it was more than allergies that bothered her Saturday.
"Unfortunately, I was lying in bed yesterday and I had a fever, so I didn't come to the site Friday," Kvitova said. "I didn't even come to the site. My body didn't help me today to move a little bit. Unfortunately I tried to play, tried to fight. But my body wouldn't let me fight."
Azarenka seemed cranky all day and had a testy exchange with the chair umpire at one point.
Serving in the second set for a game, Azarenka pumped her fists and walked off the court after the 26th-seeded Cornet hit a backhand into the net. The chair umpire had the unhappy duty of telling Azarenka her previous shot had been called out.
"Are you … kidding me?" Azarenka said. "What … are you doing?"
Winning in much less dramatic, and friendlier fashion, was men's No. 2 seed
"I am winning because I am playing well from the baseline and I am making the right decisions at the right moment," Nadal said.
Five-time U.S. Open champion and seventh-seeded Federer overpowered Frenchman
Federer will play
Isner, who had expressed disappointment Thursday when the American crowd seemed to plant itself on the side of his French opponent
"I was trying to get myself fired up," Isner said. "When it gets like this in a match going pretty long, the conditions were rough, it was so muggy out there. I was struggling with that a little bit.
"But, really, I didn't have much left. If I could have held on, not gotten broken there at the end of the fourth set, I would have liked my chances in the fifth. But in that tiebreaker, I was pretty gassed."