A pair of high-school students staged two big upsets en route to securing fourth place at the recent national curing mixed doubles championship, in an unforgettable start to a journey toward their ultimate goal of Olympic gold.Moka Tanaka, a second-year student in Sapporo, and her partner, Koei Sato, in the third year at his school in Aomori Prefecture, beat last year's runners-up in the preliminary round in early December in Wakkanai, Hokkaido.In the second round, the teenage pair toppled reigning champions Miyu Ueno and 2018 Winter Olympics representative Tsuyoshi Yamaguchi."We had a grea…READ FULL ARTICLE