| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 03-Apr-2021 | Aneurin Owen | Wales | 19-Oct-2000 | 20(166) |
| 03-Apr-2021 | Aaron Wainwright | Wales | 25-Sep-1997 | 23(190) |
| 03-Apr-2021 | Harrison Keddie | Wales | 10-Jul-1996 | 24(267) |
| 03-Apr-2021 | Joseph Davies | Wales | 13-Nov-1995 | 25(142) |
| 03-Apr-2021 | Ashton Hewitt | Wales | 20-Nov-1994 | 26(135) |
| 03-Apr-2021 | Ross Moriarty | Wales | 18-Apr-1994 | 26(351) |
| 03-Apr-2021 | Elliott Dee | Wales | 07-Mar-1994 | 27(27) |
| 03-Apr-2021 | Sam Davies | Wales | 06-Oct-1993 | 27(179) |
| 03-Apr-2021 | Jordan Williams | Wales | 20-Sep-1993 | 27(195) |
| 03-Apr-2021 | Rhodri Williams | Wales | 05-May-1993 | 27(333) |
| 03-Apr-2021 | Matthew Screech | Wales | 24-Oct-1992 | 28(161) |
| 03-Apr-2021 | Jonah Holmes | Wales | 24-Jul-1992 | 28(253) |
| 03-Apr-2021 | Lloyd Fairbrother | England | 13-Nov-1991 | 29(142) |
| 03-Apr-2021 | Greg Bateman | England | 20-Jun-1989 | 31(287) |
| 03-Apr-2021 | Jamie Roberts | Wales | 08-Nov-1986 | 34(147) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).