Tomoe Hotta defeated Saori Obata 6-0 6-4 in the Saga 25K round of 16 on grass. The upset overturned the form book — Saori Obata came in leading the head-to-head 1–0. Tomoe Hotta claimed a first win over Saori Obata in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-10-05 | Saga 25K | R16 | grass | Saori Obata | 6-3 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.