Saori Obata defeated Nana Smith 3-6 6-2 6-4 in the Fukuoka 50K round of 16 on grass. The upset overturned the form book — Nana Smith came in leading the head-to-head 2–0. Saori Obata claimed a first win over Nana Smith in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-05-06 | Fukuoka 50K | R16 | grass | Nana Smith | 3-6 7-6(3) 6-3 |
| 2000-05-01 | Gifu 50K | QF | carpet | Nana Smith | 1-6 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.