Astros To Sign Tatsuya Imai  MLB Trade RumorsSources: Astros, RHP Imai agree to 3-year deal  ESPNTatsuya Imai reportedly agrees to deal with Astros on 3-year deal worth up to $63 million  Yahoo SportsThe Opener: Imai, A’s, Giants  MLB Trade RumorsAstros land star Japanese pitcher Tatsuya Imai with uncommon contract  CBS Sports