| tournament | 2007 | 2008 | 2009 | 2010 | 2011 |
| grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments |
| australian open | a | 1r | 1r | 1r | 1r |
| french open | a | 3r | 3r | 2r | 2r |
| wimbledon | 2r | 1r | 2r | 1r | 1r |
| us open | 2r | 2r | 1r | 1r | 1r |
| win - loss | 2 - 2 | 3 - 4 | 3 - 4 | 1 - 4 | 1 - 4 |
| olympic games | olympic games | olympic games | olympic games | olympic games | olympic games |
| summer olympics | nh | 1r | not held | not held | not held |
| year - end championship | year - end championship | year - end championship | year - end championship | year - end championship | year - end championship |
| wta tour championships | a | a | a | a | a |
| wta premier mandatory tournaments | wta premier mandatory tournaments | wta premier mandatory tournaments | wta premier mandatory tournaments | wta premier mandatory tournaments | wta premier mandatory tournaments |
| indian wells | a | a | 2r | 2r | 1r |
| miami | a | 1r | 1r | 1r | 1r |
| madrid | not held | not held | lq | 2r | a |
| beijing | 1r | lq | 1r | 2r | lq |
| wta premier 5 tournaments | wta premier 5 tournaments | wta premier 5 tournaments | wta premier 5 tournaments | wta premier 5 tournaments | wta premier 5 tournaments |
| dubai | not tieri | not tieri | 1r | 3r | a |
| rome | a | 2r | a | 1r | lq |
| cincinnati | qf | a | 2r | 2r | lq |
| montréal / toronto | a | a | a | 1r | lq |
| tokyo | a | a | a | 2r | a |
| year end ranking | 49 | 49 | 52 | 74 | 114 |