Head-to-Head
Overview
Duncan Chan and R. Colby have met 1 time so far, all in 2026. Duncan Chan leads 1–0. Their first encounter was at the 2026 M25 Tulsa, OK, won by Duncan Chan.
By surface
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Duncan Chan and R. Colby have met 1 time so far, all in 2026. Duncan Chan leads 1–0. Their first encounter was at the 2026 M25 Tulsa, OK, won by Duncan Chan.