| Clue | Source | Date |
|---|---|---|
| Third-grade groups? | New York Times | 03 Feb 2024 |
| Third-stringers | LA Times Daily | 05 Jan 2022 |
| Backups' backups | New York Times | 30 Jun 2018 |
| Backups' backups | ||
| Last-resort subs | Newsday | 29 Aug 2015 |
| Subs' subs | New York Times | 10 Jan 2015 |
| Subs' subs | ||
| Last-resort subs |