Justine Henin defeated Martina Hingis 6-2 6-7 6-1 in the WTA Tour Championships round robin on carpet. The upset overturned the form book — Martina Hingis came in leading the head-to-head 2–1. Justine Henin narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-01-09 | Sydney | R32 | hard | Justine Henin | 6-3 6-3 |
| 2000-10-02 | Filderstadt | R16 | hard | Martina Hingis | 6-3 3-0 RET |
| 2000-01-17 | Australian Open | R64 | hard | Martina Hingis | 6-3 6-3 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.