BRISBANE, Australia (AFP) — Japanese tennis star Kei Nishikori has withdrawn from the season-opening Brisbane International as he recovers from a wrist injury. Nishikori, 27, has been out of action for more than four months, dropping to 22 in the world rankings. “I am so disappointed to miss Brisbane this year. For years, it’s been my first tournament of the season and I always feel so at home there,” Nishikori said on the tournament’s official Twitter account. […]