Astros signed RHP Armando Galarraga to a minor league contract.
Galarraga will throw a couple of bullpen sessions in Kissimmee, Florida before joining the starting rotation with Triple-A Oklahoma City. The 30-year-old right-hander owns a 4.69 ERA in the majors, including a 5.91 ERA in eight starts with the Diamondbacks last year.
Source: mlblogs.com