| Injuries | ||||||
| Duration | ||||||
| Date | Team | Name | Cause | Return | Orig | Left |
| 7/18/1977 | SEA | Mankowski | General | 8/3/1977 | 16 | 4 |
| 7/18/1977 | SEA | Grilli | General | 8/3/1977 | 16 | 4 |
| 7/18/1977 | SEA | Crawford,W | General | 8/3/1977 | 16 | 4 |
| 6/18/1977 | SPK | Burke,S | General | 9/30/1977 | 104 | 62 |
| 6/24/1977 | SEA | Ellis,J | General | 10/1/1977 | 99 | 63 |
| 6/7/1977 | SEA | Soto | General | 10/1/1977 | 116 | 63 |
| 7/12/1977 | FOR | Dixon | General | 10/1/1977 | 81 | 63 |
| 7/12/1977 | FOR | Foote | General | 10/1/1977 | 81 | 63 |
| 7/6/1977 | SEA | LaCock | General | 10/11/1977 | 97 | 73 |