Seeds Conquer Quarterfinals

The top seeds had different routes through to the semifinals, but the highest seed in each case came through

(Rank/Seed)

1/1 Azarenka edged (7/7) Stosur 61 46 76(5). Never before had Stosur even taken a set off Azarenka, so when Victoria took the 1st set at the loss of a game, things didn't look good. However, Stosur began to find her forehand and struck back in the 2nd. In the 3rd, Stosur constantly kept coming back, from 1-3 and 2-4 down and then 0-4 to 5-5 in the tiebreak. Azarenka proved her number one credentials here though, winning the next two points coolly to push into her 1st US Open semi final and guarantee the number one ranking after the tournament

3/3 Sharapova battled past (11/11) Bartoli 36 63 64. Bartoli had never beaten Sharapova before, but got off to a flying 4-0 lead in the 1st set when the match was called off for a day due to rain. On resumption, Bartoli continued dominating against an erratic Sharapova, taking the set and going up an early break in the 2nd. However, Sharapova began to find her serve and despite crucial moments in the 3rd i.e. 2-3 15-40, Maria continued her perfect 3 set match record this year to reach her 1st US Open semifinal since 2006

4/4 S. Williams crushed (13/12) Ivanovic 61 63, continuing her credentials as tournament favourite

10/10 Errani defeated compatriot (19/20) Vinci 62 64. In an understandably muted quarterfinal, Errani became the 1st Italian woman to reach a Grand Slam semifinal outside of Paris, taking advantage of her less experienced opponents unforced errors