New York, Sept. 6 (Jiji Press)--Japanese wheelchair tennis star Tokito Oda completed his career Golden Slam by winning his first U.S. Open men's singles title on Saturday. Oda, 19, became the youngest player to achieve the feat of winning all of the Australian Open, French Open, Wimbledon, U.S. Open and Paralympic titles. Among Japanese wheelchair tennis players in the past, Shingo Kunie...