Head-to-Head
Overview
Honori Koyama and K. Niimi have met 1 time so far, all in 2026. Honori Koyama leads 1–0. Their first encounter was at the 2026 W15 Toyama (R32), won by Honori Koyama.
By surface
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Honori Koyama and K. Niimi have met 1 time so far, all in 2026. Honori Koyama leads 1–0. Their first encounter was at the 2026 W15 Toyama (R32), won by Honori Koyama.