Sixteen-year-old Shintaro Mochizuki became the first Japanese to win a junior boys' championship at a Grand Slam by winning the Wimbledon boy's singles final on Sunday.Mochizuki, the eighth seed, defeated Spain's Carlos Gimeno Valero 6-3, 6-2, pumping his fist after hitting a backhand winner on match point.It was only the second Grand Slam junior championship by a Japanese, the first coming in 1969, when Kazuko Sawamatsu captured the Wimbledon and French Open girls' titles.Mochizuki, from Kawasaki, Kanagawa Prefecture, began playing tennis at the age of 3 and has been training in Florida si…READ FULL ARTICLE