Orioles Roster & Staff
Transactions
| Date | Transaction |
| 08/31/20 | Baltimore Orioles traded RHP Miguel Castro to New York Mets for LHP Kevin Smith and Player To Be Named Later. Victor Gonzalez sent to Orioles to complete trade, 9/20/2020 |
| 08/31/20 | Baltimore Orioles traded RHP Miguel Castro to New York Mets for LHP Kevin Smith and Player To Be Named Later. Victor Gonzalez sent to Orioles to complete trade, 9/20/2020 |
| 08/30/20 | Baltimore Orioles activated RHP Hunter Harvey from the 10-day injured list. |
| 08/30/20 | Baltimore Orioles optioned 1B Tyler Nevin to Orioles Alternate Training Site. |
| 08/30/20 | Baltimore Orioles recalled LHP Keegan Akin from Orioles Alternate Training Site. |
| 08/30/20 | Baltimore Orioles traded RHP Mychal Givens to Colorado Rockies for 1B Tyler Nevin, SS Terrin Vavra and Player To Be Named Later. |
| 08/30/20 | Baltimore Orioles traded RHP Mychal Givens to Colorado Rockies for 1B Tyler Nevin, SS Terrin Vavra and Player To Be Named Later. |
| 08/30/20 | Baltimore Orioles traded LHP Tommy Milone to Atlanta Braves for Player To Be Named Later and Player To Be Named Later. AJ Graffanino and Greg Cullen traded to Orioles as PTBNL, 11/5/2020 |
| 08/30/20 | Baltimore Orioles traded RHP Mychal Givens to Colorado Rockies for 1B Tyler Nevin, SS Terrin Vavra and Player To Be Named Later. |
| 08/29/20 | Baltimore Orioles placed RHP Shawn Armstrong on the 10-day injured list retroactive to August 26, 2020. Left S.I. joint inflammation. |
| 08/29/20 | Baltimore Orioles recalled Evan Phillips from Orioles Alternate Training Site. |
| 08/27/20 | Baltimore Orioles selected the contract of P Cesar Valdez. |
| 08/27/20 | Baltimore Orioles activated SS Jose Iglesias from the 10-day injured list. |
| 08/27/20 | Baltimore Orioles optioned 2B Ramon Urias to Orioles Alternate Training Site. |
| 08/27/20 | Baltimore Orioles sent LF Dwight Smith outright to Orioles Alternate Training Site. |
| 08/27/20 | Baltimore Orioles selected the contract of P Cesar Valdez. |
| 08/27/20 | Baltimore Orioles selected the contract of RHP Cesar Valdez from Orioles Alternate Training Site. |
| 08/27/20 | Baltimore Orioles optioned LHP Keegan Akin to Orioles Alternate Training Site. |
| 08/27/20 | Baltimore Orioles selected the contract of P Cesar Valdez. |
| 08/25/20 | Baltimore Orioles recalled Keegan Akin from Orioles Alternate Training Site. |
| 08/25/20 | Baltimore Orioles placed LHP Wade LeBlanc on the 60-day injured list. Left elbow stress reaction. |
| 08/22/20 | Baltimore Orioles selected the contract of OF Mason Williams from Orioles Alternate Training Site. |
| 08/22/20 | Baltimore Orioles designated Dwight Smith for assignment. |
| 08/21/20 | Baltimore Orioles placed 1B Chris Davis on the 10-day injured list. Left knee patellar tendinitis. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle from Orioles Alternate Training Site. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle. |
| 08/21/20 | Baltimore Orioles recalled 1B Ryan Mountcastle. |
| 08/20/20 | Baltimore Orioles sent RHP Chandler Shepherd outright to Orioles Alternate Training Site. |
| 08/18/20 | Baltimore Orioles placed SS Jose Iglesias on the 10-day injured list retroactive to August 16, 2020. Left quadriceps strain. |
| 08/18/20 | Baltimore Orioles recalled Ramon Urias from Orioles Alternate Training Site. |
| 08/17/20 | Baltimore Orioles activated RHP Dillon Tate from the 10-day injured list. |
| 08/17/20 | Baltimore Orioles optioned RHP Evan Phillips to Orioles Alternate Training Site. |
| 08/16/20 | Baltimore Orioles activated P John Means from the 10 day injured list. |
| 08/16/20 | Baltimore Orioles designated Chandler Shepherd for assignment. |
| 08/16/20 | Baltimore Orioles activated P John Means from the 10 day injured list. |
| 08/16/20 | Baltimore Orioles activated P John Means from the 10 day injured list. |
| 08/16/20 | Baltimore Orioles activated LHP John Means from the 10-day injured list. |
| 08/15/20 | Baltimore Orioles optioned LHP Keegan Akin to Orioles Alternate Training Site. |
| 08/15/20 | Baltimore Orioles activated P Jorge Lopez from the 10 day injured list. |
| 08/15/20 | Baltimore Orioles recalled CF Cedric Mullins. |
| 08/15/20 | Baltimore Orioles optioned RHP Cody Carroll to Orioles Alternate Training Site. |
| 08/15/20 | Baltimore Orioles placed RF Austin Hays on the 10-day injured list. Non-displaced rib fracture |
| 08/15/20 | Baltimore Orioles recalled CF Cedric Mullins from Orioles Alternate Training Site. |
| 08/15/20 | Baltimore Orioles activated RHP Jorge Lopez from the 10-day injured list. |
| 08/15/20 | Baltimore Orioles recalled CF Cedric Mullins, , , and. |
| 08/15/20 | Baltimore Orioles recalled CF Cedric Mullins. |
| 08/15/20 | Baltimore Orioles activated P Jorge Lopez from the 10 day injured list. |
| 08/15/20 | Baltimore Orioles activated P Jorge Lopez from the 10 day injured list. |
| 08/14/20 | Baltimore Orioles signed free agent P Elchero Francisca. |
| 08/14/20 | Baltimore Orioles selected the contract of RHP Chandler Shepherd from Orioles Alternate Training Site. |
| 08/14/20 | Baltimore Orioles signed free agent IF Frederick Bencosme to a minor league contract. |
| 08/14/20 | Baltimore Orioles optioned RHP David Hess to Orioles Alternate Training Site. |
| 08/14/20 | Baltimore Orioles recalled Cody Carroll from Orioles Alternate Training Site. |
| 08/11/20 | Baltimore Orioles placed LHP John Means on the 10-day injured list. |
| 08/10/20 | Baltimore Orioles placed RHP Jorge Lopez on the 10-day injured list. |
| 08/10/20 | Baltimore Orioles released LHP Ty Blach. |
| 08/09/20 | Baltimore Orioles claimed RHP Jorge Lopez off waivers from Kansas City Royals. |
| 08/08/20 | Baltimore Orioles recalled Keegan Akin from Orioles Alternate Training Site. |
| 08/08/20 | Baltimore Orioles optioned CF Cedric Mullins to Orioles Alternate Training Site. |
| 08/07/20 | Baltimore Orioles invited non-roster LHP Brian Gonzalez to spring training. |
| 08/07/20 | Baltimore Orioles invited non-roster SS Gunnar Henderson to spring training. |
| 08/06/20 | Baltimore Orioles optioned RF DJ Stewart to Orioles Alternate Training Site. |
| 08/05/20 | Baltimore Orioles placed LHP John Means on the bereavement list. |
| 08/03/20 | Baltimore Orioles invited non-roster LHP Bruce Zimmermann to spring training. |
| 08/03/20 | Baltimore Orioles invited non-roster RHP Kyle Bradish to spring training. |
| 08/01/20 | Baltimore Orioles selected the contract of C Bryan Holaday from Orioles Alternate Training Site. |
| 08/01/20 | Baltimore Orioles traded LHP Richard Bleier to Miami Marlins for Player To Be Named Later. |