| DATE | PLAYER | DESCRIPTION |
| 05/17/2012 | Ben Revere | Recalled from Rochester (AAA) |
|
05/17/2012 | Nick Blackburn | Placed on 15-day disabled list |
|
05/17/2012 | Ryan Doumit | Placed on 15-day disabled list |
|
05/16/2012 | Justin Morneau | Activated from 15-day disabled list |
|
05/16/2012 | Chris Parmelee | Optioned to Rochester (AAA) |
|
05/12/2012 | Matt Maloney | Sent outright to Rochester (AAA) |
|
05/09/2012 | P.J. Walters | Contract purchased from Rochester (AAA) |
|
05/09/2012 | Matt Maloney | Designated for assignment |
|
05/09/2012 | Danny Valencia | Optioned to Rochester (AAA) |
|
05/09/2012 | Darin Mastroianni | Recalled from Rochester (AAA) |
|
05/06/2012 | Justin Morneau | Placed on 15-day disabled list |
|
05/06/2012 | Brian Dozier | Contract purchased from Rochester (AAA) |
|
05/06/2012 | Scott Diamond | Recalled from Rochester (AAA) |
|
05/06/2012 | Liam Hendricks | Optioned to Rochester (AAA) |
|
05/06/2012 | Clete Thomas | Sent outright to Rochester (AAA) |
|
05/04/2012 | Clete Thomas | Designated for assignment |
|
05/04/2012 | Sean Burroughs | Sent outright to Rochester (AAA) |
|
05/04/2012 | Erik Komatsu | Claimed off waivers from St. Louis |
|
05/01/2012 | Sean Burroughs | Designated for assignment |
|
05/01/2012 | Drew Butera | Recalled from Rochester (AAA) |
|
04/28/2012 | Josh Willingham | Activated from paternity leave list |
|
04/27/2012 | Ben Revere | Optioned to Rochester (AAA) |
|
04/25/2012 | Josh Willingham | Placed on paternity leave list |
|
04/25/2012 | Ben Revere | Recalled from Rochester (AAA) |
|
04/17/2012 | Luke Hughes | Designated for assignment |
|
04/17/2012 | Jason Marquis | Recalled from New Britain (AA) |
|
04/14/2012 | Ben Revere | Optioned to Rochester (AAA) |
|
04/14/2012 | Scott Baker | Transferred to 60-day disabled list |