| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 01-Feb-2020 | Aaron Wainwright | Wales | 25-Sep-1997 | 22(129) |
| 31-Oct-2020 | Rhys Carre | Wales | 08-Feb-1998 | 22(266) |
| 31-Oct-2020 | Shane Lewis-Hughes | Wales | 20-Sep-1997 | 23(41) |
| 31-Oct-2020 | Owen Watkin | Wales | 12-Oct-1996 | 24(19) |
| 01-Feb-2020 | Dillon Lewis | Wales | 04-Jan-1996 | 24(28) |
| 01-Feb-2020 | Josh Adams | Wales | 21-Apr-1995 | 24(286) |
| 08-Feb-2020 | Nick Tompkins | Wales | 16-Feb-1995 | 24(357) |
| 01-Feb-2020 | Tomos Williams | Wales | 01-Jan-1995 | 25(31) |
| 31-Oct-2020 | Ryan Elias | Wales | 07-Jan-1995 | 25(298) |
| 22-Feb-2020 | Ross Moriarty | Wales | 18-Apr-1994 | 25(310) |
| 01-Feb-2020 | George North | Wales | 13-Apr-1992 | 27(293) |
| 07-Mar-2020 | Rob Evans | Wales | 14-Apr-1992 | 27(327) |
| 01-Feb-2020 | Wyn Jones | Wales | 26-Feb-1992 | 27(340) |
| 31-Oct-2020 | Tomas Francis | Wales | 27-Apr-1992 | 28(187) |
| 01-Feb-2020 | Jake Ball | Wales | 21-Jun-1991 | 28(225) |
| 07-Mar-2020 | Liam Williams | Wales | 09-Apr-1991 | 28(333) |
| 31-Oct-2020 | William Rowlands | Wales | 19-Sep-1991 | 29(43) |
| 07-Mar-2020 | Josh Navidi | Wales | 30-Dec-1990 | 29(68) |
| 01-Feb-2020 | Toby Faletau | Wales | 12-Nov-1990 | 29(81) |
| 01-Feb-2020 | Johnny McNicholl | Wales | 24-Sep-1990 | 29(130) |
| 22-Feb-2020 | Gareth Davies | Wales | 18-Aug-1990 | 29(188) |
| 31-Oct-2020 | James Davies | Wales | 25-Oct-1990 | 30(7) |
| 01-Feb-2020 | Daniel Biggar | Wales | 16-Oct-1989 | 30(108) |
| 01-Feb-2020 | Justin Tipuric | Wales | 06-Aug-1989 | 30(179) |
| 01-Feb-2020 | Leigh Halfpenny | Wales | 22-Dec-1988 | 31(41) |
| 01-Feb-2020 | Hadleigh Parkes | Wales | 05-Oct-1987 | 32(119) |
| 31-Oct-2020 | Jon Davies | Wales | 05-Apr-1988 | 32(209) |
| 01-Feb-2020 | Ken Owens | Wales | 03-Jan-1987 | 33(29) |
| 01-Feb-2020 | Alan Wyn Jones | Wales | 19-Sep-1985 | 34(135) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).