Head-to-Head
Overview
Kawachi/ Yamanaka and Koizumi/ Taka have met 1 time so far, all in 2026. Koizumi/ Taka leads 1–0. Their first encounter was at the 2026 M15 Yanagawa City, won by Koizumi/ Taka.
By surface
- hard0 – 1
Kawachi/ Yamanaka and Koizumi/ Taka have met 1 time so far, all in 2026. Koizumi/ Taka leads 1–0. Their first encounter was at the 2026 M15 Yanagawa City, won by Koizumi/ Taka.