Astros Roster & Staff
Transactions
| Date | Transaction |
| 01/22/10 | Houston Astros signed free agent Kevin Cash. |
| 01/21/10 | Houston Astros signed free agent RHP B.J. Hagen to a minor league contract. |
| 01/20/10 | Houston Astros signed free agent LF Cory Sullivan to a minor league contract and invited him to spring training. |
| 01/16/10 | Houston Astros invited non-roster C Brian Esposito to spring training. |
| 01/16/10 | Houston Astros signed free agent Shane Loux. |
| 01/16/10 | Houston Astros invited non-roster RHP Chia-Jen Lo to spring training. |
| 01/16/10 | Houston Astros invited non-roster C Lou Santangelo to spring training. |
| 01/16/10 | Houston Astros invited non-roster C Jason Castro to spring training. |
| 01/15/10 | Houston Astros invited non-roster RF Jason Bourgeois to spring training. |
| 01/15/10 | Jason Bourgeois roster status changed by Houston Astros. |
| 01/15/10 | Houston Astros sent Jason Bourgeois outright to Round Rock Express. |
| 01/12/10 | Houston Astros designated RF Jason Bourgeois for assignment. |
| 01/12/10 | Houston Astros signed free agent Brett Myers. |
| 01/08/10 | Houston Astros signed free agent Josh Banks. |
| 01/08/10 | Houston Astros released RHP Ryan Sadowski. |