NEW YORK, Sept. 1 (Xinhua) -- Fifth-seeded Chinese Li Na only needed 57 minutes on Sunday to beat No. 9 seed Jelena Jankovic to book a berth in the U.S. Open last eight.
It was an overwhelming match. Li had lost to Jankovic in their last three meetings, but she won all her seven break points and outscored the former world number one 20-7 on winners.
"It's very tough to play against Jankovic because she was former No. 1 and she has very good defense," said Li after the match.
"I still remember last time I played her in Rome. I was feeling I played pretty good, but still lost the match. So I was so sad after the match. So before the match, Carlos didn't tell me anything. Just say, remember how you feel after match."
Li entered the match with perfect form, winning three straight games to establish a 3-0 lead. Jankovic managed to break in the fourth game, pulling back the score to 2-3. Li shrugged off the pressure in the sixth game, breaking back to extend the advantage to 4-2. Though Jankovic finished another break afterwards, Li let go no chance in other games, finishing the first set 6-3.
Jankovic hardly had chance in the second set, losing six straight games.
Li would next face 24th seed Russian Ekaterina Makarova, who upset third seed Agnieszka Radwanska from Poland on the same day.
"I think I prefer Radwanska," said Li. "A little bit of revenge I guess, but I really haven't thought too much of next match."