Sota Yamamoto upstaged reigning world champion Shoma Uno at the ISU Grand Prix of Figure Skating's NHK Trophy as Japanese athletes claimed the top two spots in the men's short program on Friday.Skating last in the opening half of the men's field at Makomanai Sekisuiheim Ice Arena, the 22-year-old Yamamoto opened with a quadruple toe loop-triple toe loop combination and also hit a quad salchow and triple axel on his way to a personal-best 96.49.Uno, who won last year's NHK Trophy in Tokyo, finished second on 91.66 after blemishing an otherwise clean routine with a fall on a planned quad toe …READ FULL ARTICLE