Maria Sharapova defeated Kim Clijsters 6-4 6-4 in the WTA Tour Championships round robin on carpet. The upset overturned the form book — Kim Clijsters came in leading the head-to-head 5–3, defending last year's round-robin. Maria Sharapova narrowed the head-to-head to 5–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-07-30 | Olympics | QF | hard | Maria Sharapova | 6-2 7-5 |
| 2010-08-09 | Cincinnati | F | hard | Kim Clijsters | 2-6 7-6 6-2 |
| 2007-01-15 | Australian Open | SF | hard | Maria Sharapova | 6-4 6-2 |
| 2006-07-31 | San Diego | F | hard | Maria Sharapova | 7-5 7-5 |
| 2005-08-29 | US Open | SF | hard | Kim Clijsters | 6-2 6-7 6-3 |
| 2005-03-23 | Miami | F | hard | Kim Clijsters | 6-3 7-5 |
| 2003-10-20 | Luxembourg | SF | hard | Kim Clijsters | 6-0 6-3 |
| 2003-08-04 | Los Angeles | R16 | hard | Kim Clijsters | 6-4 1-6 6-1 |
Averages over each player's completed matches in the selected window (198 vs 156). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About