Young Ja Choi defeated Na Li 6-2 3-6 6-2 in the CHN vs KOR round robin on hard. The upset overturned the form book — Na Li came in leading the head-to-head 1–0. Young Ja Choi claimed a first win over Na Li in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-14 | Shenzhen 10K | R16 | hard | Na Li | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.