Japan's Shingo Kunieda, the world's top-ranked wheelchair tennis player, is a man on a mission at the Tokyo Paralympics, to win a third singles gold medal and expand the world's understanding of what para sports can be.In 2012, Kunieda became the first player to successfully defend the Paralympic men's singles title, but a troublesome right elbow contributed to a quarterfinal exit at the Rio de Janeiro Games.The 37-year-old Tokyo native is confident he can put to rest the unhappy memories from five years ago by winning gold at the Tokyo Paralympics, which open Tuesday."I feel like I'm in a …READ FULL ARTICLE
