| Transactions | ||||||
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/5/1920 | BB | Flack | Acquired via trade | Wil | After | |
| 4/5/1920 | Geo | Holke | Traded away | Bla | After | |
| 4/5/1920 | Geo | Johnston,J | Traded away | Bla | After | |
| 4/5/1920 | Geo | Pratt | Acquired via trade | Bla | After | |
| 4/5/1920 | Geo | Smith,Ea | Traded away | Bla | After | |
| 4/5/1920 | Wil | Flack | Traded away | BB | After | |
| 4/18/1920 | Riv | Crumpler | Promoted to active roster | Before | ||
| 4/18/1920 | Riv | Lowe | Demoted to reserve roster | Before | ||
| 4/24/1920 | Riv | Carlson,L | Demoted to reserve roster | Before | ||
| 4/24/1920 | Riv | Conkwright | Promoted to active roster | Before | ||
| 4/30/1920 | Wil | Kime | Demoted to reserve roster | Before | ||
| 4/30/1920 | Wil | Lyons | Promoted to active roster | Before | ||
| 5/18/1920 | Geo | Morrison | Demoted to reserve roster | Before | ||
| 5/18/1920 | Geo | Murchison | Promoted to active roster | Before | ||