Jankovic battles through to quarters; Dementieva through with easy win

Jelena Jankovic dropped the first set in her Day 7 match, but came back to win to Caroline Wozniacki in a thrilling three-setter.

Jankovic, the highest seed left, battled her way through to the quarterfinals after a win to 21st seed Wozniakci, 36 62 61.

"In the first set she played quite solid. She put all these balls back. She didn't make any errors. I was the one who was all over the place," Jankovic said. "I tried to stay composed and calm. I had to change something. In the second set I started playing a bit more aggressively from one side; I was hitting the ball harder from the other. I was putting more spin, too. I did the smart things and it worked out. I cruised through after that. I'm happy to get through."

"I started out well. I played my own game. I played aggressive. But from the second set I got defensive," Wozniacki said. "Even though I was hitting the ball it wasn't going. I felt a bit tired. Jelena is No.2 for a reason. She took advantage and she started dictating the points. I just didn't feel like I could overpower her today. She was just better than me today. She's playing really well."

Next up for Jankovic is 29-year-old Sybille Bammer, who won her fourth round match to No. 12 seed Marion Bartoli 76(3) 06 64.

"This year I haven't played her, but last year I played her many, many times - I think three times in a row around this time of year," Jankovic said of Bammer, against whom she is 5-1 lifetime. "I know how to play against her. She's an experienced player. She runs very well. She's quite solid. But I will do my best."

Also reaching the quarterfinals on Sunday were Elena Dementieva and Patty Schnyder, who will now play for the 17th time, with Dementieva winning nine of their first 16 matches. The No.15-seeded Schnyder was the first to advance, rallying back to defeat No.28 seed Katarina Srebotnik, 46 63 63; No.5 seed Dementieva followed her into the final eight in the feature night match on Arthur Ashe, beating a somewhat erratic Li Na, 64 61.

"We've played lots of times against each other through our careers," Dementieva said on her looming match with Schnyder. "She's a very unique player. She's a lefty, first of all, and has great feel. It's never easy to play against her. But I've got experience playing against Patty, so hopefully it's going to help me."