Head-to-Head
Overview
Oki/ Yamanaka and Kawachi/ Tanuma have met 1 time so far, all in 2026. Oki/ Yamanaka leads 1–0. Their first encounter was at the 2026 M15 Tokyo 4 (Japan) (R16), won by Oki/ Yamanaka.
By surface
- hard1 – 0
Oki/ Yamanaka and Kawachi/ Tanuma have met 1 time so far, all in 2026. Oki/ Yamanaka leads 1–0. Their first encounter was at the 2026 M15 Tokyo 4 (Japan) (R16), won by Oki/ Yamanaka.