Head-to-Head
Overview
R. Kosaka and G. Jang have met 1 time so far, all in 2026. G. Jang leads 1–0. Their first encounter was at the 2026 W35 Andong (R32), won by G. Jang.
By surface
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R. Kosaka and G. Jang have met 1 time so far, all in 2026. G. Jang leads 1–0. Their first encounter was at the 2026 W35 Andong (R32), won by G. Jang.