Head-to-Head
Overview
Katayama/ Shiraishi and Shin/ Sumizawa have met 1 time so far, all in 2026. Katayama/ Shiraishi leads 1–0. Their first encounter was at the 2026 M15 Tokyo 3 (Japan) (QF), won by Katayama/ Shiraishi.
By surface
- hard1 – 0
Katayama/ Shiraishi and Shin/ Sumizawa have met 1 time so far, all in 2026. Katayama/ Shiraishi leads 1–0. Their first encounter was at the 2026 M15 Tokyo 3 (Japan) (QF), won by Katayama/ Shiraishi.