Orioles Roster & Staff
Transactions
| Date | Transaction |
| 07/31/11 | Baltimore Orioles optioned Jason Berken to Norfolk Tides. |
| 07/31/11 | Baltimore Orioles traded RHP Koji Uehara to Texas Rangers for 1B Chris Davis and RHP Tommy Hunter. |
| 07/31/11 | Baltimore Orioles traded RHP Koji Uehara to Texas Rangers for 1B Chris Davis and RHP Tommy Hunter. |
| 07/31/11 | Baltimore Orioles traded RHP Koji Uehara to Texas Rangers for 1B Chris Davis and RHP Tommy Hunter. |
| 07/31/11 | Baltimore Orioles Traded 1B Derrek Lee to Pittsburgh Pirates and Bradenton Marauders Traded 1B Aaron Baker to Frederick Keys. |
| 07/31/11 | Baltimore Orioles optioned Chris Tillman to Norfolk Tides. |
| 07/31/11 | Baltimore Orioles recalled Pedro Viola from Bowie Baysox. |
| 07/31/11 | Baltimore Orioles selected the contract of Mike Ballard from Bowie Baysox. |
| 07/30/11 | Baltimore Orioles optioned Chris Tillman to Norfolk Tides. |
| 07/30/11 | Baltimore Orioles recalled LHP Zach Britton from Bowie Baysox. |
| 07/30/11 | Baltimore Orioles recalled RHP Chris Tillman from Norfolk Tides. |
| 07/29/11 | Baltimore Orioles sent Mark Worrell outright to Norfolk Tides. |
| 07/26/11 | Baltimore Orioles activated DH Vladimir Guerrero from the 15-day disabled list. |
| 07/26/11 | Baltimore Orioles optioned RHP Mark Worrell to Norfolk Tides. |
| 07/25/11 | Baltimore Orioles signed LHP Bennett Parry. |
| 07/25/11 | Baltimore Orioles signed Bennett Parry. |
| 07/23/11 | Baltimore Orioles recalled Josh Bell from Norfolk Tides. |
| 07/23/11 | Baltimore Orioles placed LF Luke Scott on the 15-day disabled list. Right shoulder strain. |
| 07/22/11 | Baltimore Orioles optioned Matt Angle to Norfolk Tides. |
| 07/22/11 | Baltimore Orioles activated LF Luke Scott from the 15-day disabled list. |
| 07/22/11 | Baltimore Orioles reassigned 3B Josh Bell to the minor leagues. |
| 07/21/11 | Baltimore Orioles sent Chorye Spoone outright to Bowie Baysox. |
| 07/19/11 | Alfredo Simon roster status changed by Baltimore Orioles. |
| 07/19/11 | Baltimore Orioles designated Chorye Spoone for assignment. |
| 07/19/11 | Baltimore Orioles optioned LHP Zach Phillips to Norfolk Tides. |
| 07/19/11 | Baltimore Orioles optioned Josh Bell to Norfolk Tides. |
| 07/19/11 | Baltimore Orioles transferred 2B Brian Roberts from the 15-day disabled list to the 60-day disabled list. |
| 07/19/11 | Texas Rangers Traded LHP Zach Phillips to Baltimore Orioles and Norfolk Tides Traded SS Nick Green to Round Rock Express. |
| 07/18/11 | Baltimore Orioles placed RHP Alfredo Simon on the restricted list. |
| 07/18/11 | Baltimore Orioles recalled Josh Bell from Norfolk Tides. |
| 07/18/11 | Baltimore Orioles selected the contract of Mark Worrell from Norfolk Tides. |
| 07/18/11 | Baltimore Orioles optioned RHP Mitch Atkins to Norfolk Tides. |
| 07/17/11 | Baltimore Orioles recalled Troy Patton from Norfolk Tides. |
| 07/17/11 | Baltimore Orioles recalled Matt Angle from Norfolk Tides. |
| 07/17/11 | Baltimore Orioles placed DH Vladimir Guerrero on the 15-day disabled list retroactive to July 11, 2011. Small fracture in his right hand. |
| 07/17/11 | Baltimore Orioles optioned Pedro Viola to Bowie Baysox. |
| 07/14/11 | Tyler Wilson assigned to GCL Orioles from Baltimore Orioles. |
| 07/13/11 | Baltimore Orioles signed RHP Tyler Wilson. |
| 07/09/11 | Baltimore Orioles optioned Zach Britton to Bowie Baysox. |
| 07/09/11 | Baltimore Orioles selected the contract of Mark Hendrickson from Norfolk Tides. |
| 07/07/11 | Baltimore Orioles signed LHP Eric Wooten. |
| 07/07/11 | Baltimore Orioles signed RHP Jose Rivera. |
| 07/05/11 | Baltimore Orioles placed LF Luke Scott on the 15-day disabled list retroactive to July 4, 2011. Right knee contusion. |
| 07/05/11 | Baltimore Orioles selected the contract of Mitch Atkins from Norfolk Tides. |
| 07/04/11 | RF Jalen Simmons assigned to GCL Orioles from Baltimore Orioles. |
| 07/04/11 | RHP Mark Blackmar assigned to GCL Orioles from Baltimore Orioles. |
| 07/03/11 | Baltimore Orioles signed OF Jalen Simmons. |
| 07/03/11 | Baltimore Orioles signed RHP Mark Blackmar. |
| 07/01/11 | Baltimore Orioles optioned Brian Matusz to Norfolk Tides. |
| 07/01/11 | Baltimore Orioles sent LHP Clay Rapada outright to Norfolk Tides. |
| 07/01/11 | Baltimore Orioles recalled Pedro Viola from Bowie Baysox. |