| Injuries | ||||||
| Duration | ||||||
| Date | Team | Name | Cause | Return | Orig | Left |
| 7/29/1921 | Gal | Wilkinson | General | 8/14/1921 | 16 | 2 |
| 8/12/1921 | Mac | Foster | General | 8/17/1921 | 5 | 5 |
| 8/8/1921 | Tex | Benton | General | 8/18/1921 | 10 | 6 |
| 7/20/1921 | Mac | Ehmke | General | 8/20/1921 | 31 | 8 |
| 8/12/1921 | Mid | Kolp | General | 8/28/1921 | 16 | 16 |