| DATE | PLAYER | DESCRIPTION |
| 05/21/2012 | Vinny Rottino | Recalled from Buffalo (AAA) |
|
05/21/2012 | Chris Schwinden | Optioned to Buffalo (AAA) |
|
05/20/2012 | Miguel Batista | Placed on 15-day disabled list |
|
05/20/2012 | Chris Schwinden | Recalled from Buffalo (AAA) |
|
05/19/2012 | Jeremy Hefner | Recalled from Buffalo (AAA) |
|
05/19/2012 | Jordany Valdespin | Optioned to Buffalo (AAA) |
|
05/17/2012 | D.J. Carrasco | Designated for assignment |
|
05/17/2012 | Robert Carson | Recalled from Binghamton (AA) |
|
05/11/2012 | Vinny Rottino | Optioned to Buffalo (AAA) |
|
05/11/2012 | Ronny Cedeno | Activated from 15-day disabled list |
|
05/08/2012 | Josh Thole | Placed on 7-day disabled list |
|
05/08/2012 | Rob Johnson | Contract purchased from Buffalo (AAA) |
|
05/08/2012 | Pedro Beato | Transferred to 60-day disabled list |
|
05/07/2012 | Ruben Tejada | Placed on 15-day disabled list |
|
05/07/2012 | Jordany Valdespin | Recalled from Buffalo (AAA) |
|
05/05/2012 | Jordany Valdespin | Optioned to Buffalo (AAA) |
|
05/05/2012 | D.J. Carrasco | Activated from 15-day disabled list |
|
05/04/2012 | Vinny Rottino | Contract purchased from Buffalo (AAA) |
|
05/04/2012 | Chris Schwinden | Optioned to Buffalo (AAA) |
|
05/04/2012 | Mike Pelfrey | Transferred to 60-day disabled list |