Martina Hingis defeated Nadia Petrova 6-4 3-6 6-3 in the WTA Tour Championships round robin on carpet. The upset overturned the form book — Nadia Petrova came in defending last year's round-robin. Martina Hingis extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-09-30 | Moscow | R32 | hard | Nadia Petrova | 6-2 6-2 |
| 2000-08-14 | Montreal | R32 | hard | Martina Hingis | 6-1 6-3 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.