Head-to-Head
Overview
Guillen/ Koyama and Moon/ Cheuk have met 1 time so far, all in 2026. Moon/ Cheuk leads 1–0. Their first encounter was at the 2026 W15 Toyama 2 (Japan) (R16), won by Moon/ Cheuk.
By surface
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Guillen/ Koyama and Moon/ Cheuk have met 1 time so far, all in 2026. Moon/ Cheuk leads 1–0. Their first encounter was at the 2026 W15 Toyama 2 (Japan) (R16), won by Moon/ Cheuk.