SPB In Season Free Agency -- SPB-1938
Regular season
| Transactions |
| Seq | Date | Team | Player | Type |
| 0 | 5/21/1938 | MGB | Bartling | Released |
| 0 | 5/21/1938 | MGB | Irwin | Signed |
| 0 | 5/21/1938 | WBS | Benge | Released |
| 0 | 5/21/1938 | WBS | Hoyt | Signed |
| 0 | 8/15/1938 | MGB | Irwin | Released |
| 0 | 8/15/1938 | MGB | Jungels | Signed |
| 0 | 8/27/1938 | FRK | Jorgens | Signed |
| 0 | 8/27/1938 | FRK | Maggert | Released |
| 0 | 10/1/1938 | MGB | Asbell | Signed |
| 0 | 10/1/1938 | MGB | Johnson,R | Signed |
| 0 | 10/1/1938 | MGB | Parker | Released |
| 0 | 10/1/1938 | MGB | Spencer | Released |
| 0 | 10/6/1938 | FRK | Berg | Signed |
| 0 | 10/6/1938 | FRK | Bongiovani | Signed |
| 0 | 10/6/1938 | FRK | Connors | Released |
| 0 | 10/6/1938 | FRK | Jorgens | Released |