Mari Tanaka defeated Mayumi Yamamoto 6-2 6-2 in the Tokyo 10K round of 16 on carpet. Mari Tanaka extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-09-17 | Tsukuba 25K | R32 | hard | Mayumi Yamamoto | 6-3 6-3 |
| 2007-08-27 | Saitama 10K | QF | hard | Mari Tanaka | 6-1 1-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.