Head-to-Head
Overview
Kawachi/ Sumizawa and Kumasaka/ Takahata have met 1 time so far, all in 2026. Kumasaka/ Takahata leads 1–0. Their first encounter was at the 2026 M15 Tokyo 2 (QF), won by Kumasaka/ Takahata.
By surface
- hard0 – 1
Kawachi/ Sumizawa and Kumasaka/ Takahata have met 1 time so far, all in 2026. Kumasaka/ Takahata leads 1–0. Their first encounter was at the 2026 M15 Tokyo 2 (QF), won by Kumasaka/ Takahata.