Frederick Keys Roster & Staff
Frederick Transactions
| Date | Transaction |
| 09/08/26 | RHP Isaac Silva assigned to Frederick Keys from Delmarva Shorebirds. |
| 09/08/26 | OF Félix Amparo assigned to Frederick Keys from Delmarva Shorebirds. |
| 09/08/26 | RHP Jake Dykhoff assigned to Norfolk Tides from Frederick Keys. |
| 09/08/26 | 2B Edwin Amparo assigned to Chesapeake Baysox from Frederick Keys. |
| 09/06/26 | Frederick Keys placed OF Braylon Whitaker on the 7-day injured list. |
| 09/06/26 | Frederick Keys activated RHP Kiefer Lord from the 7-day injured list. |
| 09/04/26 | Frederick Keys placed RHP Harrison Kreiling on the 7-day injured list. |
| 09/03/26 | Frederick Keys transferred OF RJ Austin from the 7-day injured list to the 60-day injured list. |
| 09/01/26 | Frederick Keys activated OF Elis Cuevas from the 60-day injured list. |
| 09/01/26 | Frederick Keys transferred 2B Edwin Amparo to the Development List. |
| 09/01/26 | OF Ty Head assigned to Frederick Keys from Delmarva Shorebirds. |
| 09/01/26 | RHP Bradley Brehmer assigned to Chesapeake Baysox from Frederick Keys. |
| 09/01/26 | RHP Harrison Kreiling assigned to Frederick Keys from Delmarva Shorebirds. |