Head-to-Head
Overview
K. Otsuka and Koki Matsuda have met 1 time so far, all in 2026. Koki Matsuda leads 1–0. Their first encounter was at the 2026 M15 Karuizawa (R16), won by Koki Matsuda.
By surface
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K. Otsuka and Koki Matsuda have met 1 time so far, all in 2026. Koki Matsuda leads 1–0. Their first encounter was at the 2026 M15 Karuizawa (R16), won by Koki Matsuda.