Riko Sawayanagi defeated Akiko Omae 6-0 4-6 6-3 in the Kurume 50K round of 32 on grass. The upset overturned the form book — Akiko Omae came in leading the head-to-head 3–0. Riko Sawayanagi claimed a first win over Akiko Omae in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-11-18 | Toyota 75K | Q32 | carpet | Akiko Omae | 6-2 6-2 |
| 2011-10-03 | Kofu 50K | R16 | hard | Akiko Omae | 7-5 6-7(6) 7-6(2) |
| 2011-06-06 | Tokyo 10K | R16 | hard | Akiko Omae | 6-1 6-3 |
Averages over each player's completed matches in the selected window (86 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About