Kazuo Matsui
In January and February 2008, the Astros signed Brandon Backe, Ty Wigginton, Dave Borkowski and Shawn Chacón to one-year deals. The starting rotation would feature Roy Oswalt and Brandon Backe as numbers one and two. Wandy Rodríguez, Chacón and Chris Sampson rounded out the bottom three slots in the rotation. Woody Williams had retired after a 0–4 spring training and Jason Jennings was now with Texas. On the other side of the roster, the Astros would start without Kazuo Matsui, who was on a minor league rehab assignment after a spring training injury.