Mary Pierce defeated Elena Dementieva 6-2 6-3 in the WTA Tour Championships round robin on carpet. The upset overturned the form book — Elena Dementieva came in leading the head-to-head 2–1, defending last year's round-robin. Mary Pierce narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-29 | US Open | SF | hard | Mary Pierce | 3-6 6-2 6-2 |
| 2003-03-31 | Sarasota | R16 | clay | Elena Dementieva | 3-6 6-1 6-2 |
| 2000-03-20 | Miami | R64 | hard | Elena Dementieva | 6-3 2-1 RET |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.