Transactions| Date | Transaction | |||
| 5/31/05 | Designated OF Eli Marrero for assignment and purchased the contract of OF Shane Costa from Double-A Wichita. | |||
| Named Buddy Bell manager. | ||||
| 5/30/05 | Terminated the contract of hitting coach Jeff Pentland and replaced him with Minor League hitting instructor Andre David. | |||
| 5/26/05 | Purchased the contract of RHP Steve Stemle from Triple-A Omaha and optioned LHP Jaime Cerda to Omaha; Designated RHP Shawn Camp for assignment. | |||
| 5/22/05 | Placed 1B/DH Ken Harvey on the 15-day disabled list with a back injury; Purchased the contract of RHP Ryan Jensen from Triple-A Omaha. | |||
| 5/14/05 | Placed RHP Denny Bautista on the 15-day disabled list with tendinitis in his right shoulder and recalled OF Matt Diaz from Triple-A Omaha; 3B Chris Truby cleared waivers and was outrighted to Triple-A Omaha. | |||
| 5/12/05 | Placed RHP Kyle Snyder on the 15-day disabled list with a right shoulder strain and recalled RHP D.J. Carrasco from Triple-A Omaha. | |||
| 5/11/05 | Activated 3B Chris Truby from the 15-day disabled list and designated him for assignment. | |||
| 5/10/05 | Tony Pena resigns as manager. Bench coach Bob Schaefer named interim manager. | |||
| 5/9/05 | Placed LHP Brian Anderson on the 15-day disabled list with left elbow inflammation and recalled RHP Leo Nunez from Double-A Wichita. | |||
| 5/3/05 | Activated 3B Mark Teahen from the 15-day disabled list and optioned OF Matt Diaz to Triple-A Omaha. | |||