Martina Hingis broke her pattern, Svetlana Kuznetsova pounded away and Andy Roddick won but wasn't happy Thursday in reaching the third round of the U.S. Open.
After Hingis and 106th-ranked Pauline Parmentier of France traded six straight service breaks, the 1997 Open champion closed out the match 6-2, 7-5.
Parmentier was two points from evening the match when Hingis held serve to tie it at 5-all. With temperatures in the low 30s Celsius (upper 80s Fahrenheit), the 16th-seeded Swiss swiftly took control.
"I didn't want to play a third set in this heat," Hingis said.
The fourth-seeded Kuznetsova didn't dally in beating Camille Pin of France 6-3, 4-6, 6-0. The former U.S. Open champion seemed especially determined after missing an easy forehand that lost the second set.
"It was too late to change anything," Kuznetsova said. "From this moment, I just started to turn it on."
Trying to finish off each rally in a hurry, Kuznetsova took every opportunity to rush the net _ she approached more than she could ever remember. She smacked 46 winners in all, enough to overcome 34 unforced errors.
"I'm pretty happy to come a lot to the net," she said. "I had so many chances to come in and sometimes I saw I didn't do that."
Frustrated in the first set, Roddick wound up advancing when Jose Acasuso of Argentina quit because of a bad left knee while trailing 4-6, 6-1, 6-2.
"That's not the way you want to get through," said Roddick, who was celebrating his 25th birthday. "I'm lucky enough to get my birthday wish every year, which is to play at the U.S. Open."
Nicole Vaidisova had the loudest shot of the day session. The 13th-seeded Czech severely bent her racket when she slammed it into a chair during a changeover, then came back to sweep a tiebreaker and beat Flavia Pennetta of Italy 6-2, 7-6 (0).
American teen Donald Young also made it to the third round, and he didn't have to pick up his racket. The 18-year-old Wimbledon junior champ won in a walkover when No. 13 Richard Gasquet of France withdrew because of a fever and a sore throat.
"Prefer to win it," Young said after hearing of Gasquet's withdrawal, "but I'll take this."
Also out of the tournament, at least on the singles side, was Bethanie Mattek. Known for her outlandish outfits, she didn't disappoint.
Wearing a low-cut silver top and headdress that semi-resembled her gold Wonder Woman-inspired ensemble in the first round, Mattek lost to No. 18 Shahar Peer of Israel 6-2, 6-1.
Roddick was perturbed early when a fan shouted "come in!" at him during a long rally. The big hitter lost the point and immediately conferred with the chair umpire, who made an announcement asking the crowd to be quiet during play.
Beaten in the opening set, Roddick bounded out early for the next one. He was standing on court, ready to serve, a full minute before Acasuso came out.
Following the third set, Acasuso called for a trainer. A moment later, he retired.
In other matches, No. 9 Tomas Berdych of the Czech Republic beat Simone Bolelli of Italy 7-5, 6-3, 6-3 and No. 19 Andy Murray of Britain stopped Jonas Bjorkman of Sweden 5-7, 6-3, 6-1, 4-6, 6-1.
On the women's side, No. 6 Anna Chakvetadze of Russia beat Nicole Pratt of Australia 6-3, 6-4, No. 7 Nadia Petrova beat Anastasia Rodionova 7-5, 6-1 in a Russian matchup, No. 11 Patty Schnyder of Switzerland stopped Severine Bremond of France 6-3, 6-0 and No. 26 Sania Mirza of India defeated Laura Granville 6-3, 7-5.
Maria Sharapova and James Blake were scheduled to play at night.