| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 30-Jan-2021 | Sam Costelow | Wales | 10-Jan-2001 | 20(20) |
| 08-Nov-2020 | Jac Price | Wales | 04-Aug-2000 | 20(96) |
| 23-Oct-2020 | Jac Morgan | Wales | 21-Jan-2000 | 20(276) |
| 01-Nov-2020 | Morgan Jones | Wales | 23-May-1999 | 21(163) |
| 08-Nov-2020 | Ryan Conbeer | Wales | 05-Feb-1999 | 21(277) |
| 03-Oct-2020 | Tom Rogers | Wales | 17-Dec-1998 | 21(291) |
| 01-Jan-2021 | Dan Davis | Wales | 17-Sep-1998 | 22(107) |
| 23-Oct-2020 | Dane Blacker | Wales | 06-Jul-1998 | 22(110) |
| 12-Mar-2021 | Steff Thomas | Wales | 27-Apr-1997 | 23(319) |
| 03-Oct-2020 | Josh Macleod | Wales | 27-Oct-1996 | 23(341) |
| 11-Oct-2020 | Johnny Williams | Wales | 18-Oct-1996 | 23(358) |
| 03-Oct-2020 | Daniel Jones | Wales | 07-Jan-1996 | 24(270) |
| 26-Dec-2020 | Kieran Hardy | Wales | 30-Nov-1995 | 25(27) |
| 23-Oct-2020 | Tyler Morgan | Wales | 11-Sep-1995 | 25(43) |
| 01-Nov-2020 | Taylor Davies | Wales | 30-Jul-1995 | 25(95) |
| 23-Oct-2020 | Tevita Ratuva | Fiji | 08-May-1995 | 25(169) |
| 22-Nov-2020 | Danny Drake | New Zealand | 25-Mar-1995 | 25(243) |
| 11-Oct-2020 | Ryan Elias | Wales | 07-Jan-1995 | 25(278) |
| 01-Nov-2020 | Josh Helps | Wales | 22-Dec-1994 | 25(315) |
| 23-Oct-2020 | Javan Sebastian | Scotland | 22-Sep-1994 | 26(32) |
| 03-Oct-2020 | Steffan Evans | Wales | 01-Sep-1994 | 26(33) |
| 23-Oct-2020 | Angus O'Brien | Wales | 17-Sep-1994 | 26(37) |
| 14-Nov-2020 | Ed Kennedy | Australia | 19-Sep-1994 | 26(57) |
| 03-Oct-2020 | Steffan Hughes | Wales | 17-Feb-1994 | 26(229) |
| 09-Jan-2021 | Pieter Scholtz | South Africa | 20-Mar-1994 | 26(296) |
| 01-Nov-2020 | Paul Asquith | Australia | 08-Dec-1993 | 26(329) |
| 11-Oct-2020 | Samson Lee | Wales | 30-Nov-1992 | 27(315) |
| 08-Nov-2020 | Rob Evans | Wales | 14-Apr-1992 | 28(208) |
| 03-Oct-2020 | Wyn Jones | Wales | 26-Feb-1992 | 28(220) |
| 01-Jan-2021 | Tom Prydie | Wales | 23-Feb-1992 | 28(313) |
| 03-Oct-2020 | Sam Lousi | Tonga | 20-Jul-1991 | 29(76) |
| 03-Oct-2020 | Jake Ball | Wales | 21-Jun-1991 | 29(105) |
| 23-Oct-2020 | Liam Williams | Wales | 09-Apr-1991 | 29(198) |
| 03-Oct-2020 | Blade Thomson | Scotland | 04-Dec-1990 | 29(304) |
| 01-Nov-2020 | Johnny McNicholl | Wales | 24-Sep-1990 | 30(39) |
| 03-Oct-2020 | Gareth Davies | Wales | 18-Aug-1990 | 30(47) |
| 23-Oct-2020 | Uzair Cassiem | South Africa | 17-Mar-1990 | 30(221) |
| 22-Mar-2021 | Lewis Rawlins | Wales | 13-Apr-1990 | 30(344) |
| 03-Oct-2020 | Leigh Halfpenny | Wales | 22-Dec-1988 | 31(286) |
| 23-Oct-2020 | Phil Price | Wales | 10-Nov-1988 | 31(347) |
| 03-Oct-2020 | Sione Kalamafoni | Tonga | 18-May-1988 | 32(138) |
| 03-Oct-2020 | Jon Davies | Wales | 05-Apr-1988 | 32(181) |
| 23-Oct-2020 | Marc Jones | Wales | 03-Apr-1987 | 33(204) |
| 12-Mar-2021 | Aaron Shingler | Wales | 07-Aug-1987 | 33(218) |
| 03-Oct-2020 | Ken Owens | Wales | 03-Jan-1987 | 33(274) |
| 03-Oct-2020 | Werner Kruger | South Africa | 23-Jan-1985 | 35(254) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).