Mari Tanaka defeated Cassandra Barr 6-3 7-6 in the Yamaguchi 10K qualifying round on clay. The result followed the form book — Mari Tanaka came in leading the head-to-head 1–0. Mari Tanaka extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-06-25 | Noto 25K | R32 | carpet | Mari Tanaka | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.