Head-to-Head
Overview
T. Kumasaka and J. Yamasaki have met 1 time so far, all in 2026. T. Kumasaka leads 1–0. Their first encounter was at the 2026 M25 Nakhon Pathom 2 (Thailand) (R32), won by T. Kumasaka.
By surface
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T. Kumasaka and J. Yamasaki have met 1 time so far, all in 2026. T. Kumasaka leads 1–0. Their first encounter was at the 2026 M25 Nakhon Pathom 2 (Thailand) (R32), won by T. Kumasaka.