| Date | Transaction | |||
| 5/26/06 | Optioned RHP Casey Daigle to Triple-A Tucson and recalled RHP Enrique Gonzalez. | |||
| 5/24/06 | Acquired RHP Jorge Julio from the New York Mets in exchange for RHP Orlando Hernandez. | |||
| 5/20/06 | Purchased the contract of RHP Kevin Jarvis from Triple-A Tuscon, optioned RHP Greg Aquino to Tucson and designated RHP Brian Bruney for assignment. | |||
| 5/2/06 | Placed RHP Russ Ortiz on the 15-day disabled list, retroactive to April 24, with a right calf strain and recalled RHP Casey Daigle from Triple-A Tucson. | |||