Jose Valdez, who went 1-1 with a 3.05 ERA and 10 saves in 38.1 innings with the Thunder this season, has signed with the Astros, according to Brian McTaggart of MLB.com. Valdez, 25, was a minor league free agent who also spent time with the Scranton/Wilkes-Barre Yankees. Overall, Valdez was 3-2 with a 3.43 ERA and 60 strikeouts in 57.1 innings in 2009.