Head-to-Head
Overview
Natsumi Kawaguchi and Sayaka Ishii have met 1 time so far, all in 2026. Natsumi Kawaguchi leads 1–0. Their first encounter was at the 2026 W100 Takasaki (R32), won by Natsumi Kawaguchi.
By surface
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Natsumi Kawaguchi and Sayaka Ishii have met 1 time so far, all in 2026. Natsumi Kawaguchi leads 1–0. Their first encounter was at the 2026 W100 Takasaki (R32), won by Natsumi Kawaguchi.