Famous People of Japan
Japanese people database × places of origin
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Yūma Koishi

小石祐馬
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Yūma Koishi (小石 祐馬, Koishi Yūma; born 15 September 1993) is a Japanese cyclist, who currently rides for UCI Continental team Kinan Racing Team.

Source: “Yūma Koishi”, English Wikipedia (CC BY-SA 4.0), excerpt