| DATE | PLAYER | DESCRIPTION |
| 05/17/2012 | Brad Bergesen | Sent outright to Norfolk (AAA) |
|
05/14/2012 | Zelous Wheeler | Sent outright to Bowie (AA) |
|
05/13/2012 | Matt Antonelli | Designated for assignment |
|
05/13/2012 | Stuart Pomeranz | Optioned to Norfolk (AAA) |
|
05/13/2012 | Xavier Avery | Contract purchased from Norfolk (AAA) |
|
05/12/2012 | Brad Bergesen | Designated for assignment |
|
05/12/2012 | Mark Reynolds | Placed on 15-day disabled list |
|
05/12/2012 | Bill Hall | Contract purchased from Norfolk (AAA) |
|
05/11/2012 | Matt Lindstrom | Placed on 15-day disabled list |
|
05/11/2012 | Zelous Wheeler | Designated for assignment |
|
05/11/2012 | Dana Eveland | Recalled from Norfolk (AAA) |
|
05/10/2012 | Tommy Hunter | Recalled from Norfolk (AAA) |
|
05/10/2012 | Endy Chavez | Placed on 15-day disabled list |
|
05/09/2012 | Zach Phillips | Optioned to Norfolk (AAA) |
|
05/09/2012 | Steven Tolleson | Contract purchased from Norfolk (AAA) |
|
05/09/2012 | Taylor Teagarden | Transferred to 60-day disabled list |
|
05/08/2012 | Zach Phillips | Recalled from Norfolk (AAA) |
|
05/08/2012 | Jason Berken | Optioned to Norfolk (AAA) |
|
05/07/2012 | Tsuyoshi Wada | Transferred to 60-day disabled list |
|
05/07/2012 | Ronny Paulino | Optioned to Norfolk (AAA) |
|
05/07/2012 | Jason Berken | Recalled from Norfolk (AAA) |
|
05/07/2012 | Tommy Hunter | Optioned to Norfolk (AAA) |
|
05/07/2012 | Stu Pomeranz | Contract purchased from Norfolk (AAA) |
|
05/04/2012 | Luis Exposito | Recalled from Norfolk (AAA) |
|
05/04/2012 | Nolan Reimold | Placed on 15-day disabled list |