Dominique Monami defeated Maria Sanchez Lorenzo 6-2 6-3 in the Australian Open round of 16 on hard. The upset overturned the form book — Maria Sanchez Lorenzo came in leading the head-to-head 1–0, defending last year's round of 128. Dominique Monami claimed a first win over Maria Sanchez Lorenzo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-08-23 | New Haven | R32 | hard | Maria Sanchez Lorenzo | 6-2 5-7 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.