Saori Obata defeated Elena Tatarkova 2-6 6-4 7-5 in the Sochi 50K round of 16 on hard. The upset overturned the form book — Elena Tatarkova came in leading the head-to-head 1–0, but Saori Obata had been the form player, winning 3 of their last 5 on hard. Saori Obata claimed a first win over Elena Tatarkova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-02-25 | Bushey 25K | R16 | carpet | Elena Tatarkova | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.