| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 01-Nov-2019 | Owen Lane | Wales | 20-Dec-1997 | 21(316) |
| 23-Sep-2019 | Aaron Wainwright | Wales | 25-Sep-1997 | 21(363) |
| 13-Oct-2019 | Owen Watkin | Wales | 12-Oct-1996 | 23(0) |
| 13-Oct-2019 | Adam Beard | Wales | 07-Jan-1996 | 23(279) |
| 13-Oct-2019 | Dillon Lewis | Wales | 04-Jan-1996 | 23(282) |
| 23-Sep-2019 | Josh Adams | Wales | 21-Apr-1995 | 24(155) |
| 13-Oct-2019 | Ryan Elias | Wales | 07-Jan-1995 | 24(279) |
| 01-Nov-2019 | Tomos Williams | Wales | 01-Jan-1995 | 24(304) |
| 13-Oct-2019 | Hallam Amos | Wales | 24-Sep-1994 | 25(19) |
| 09-Oct-2019 | Ross Moriarty | Wales | 18-Apr-1994 | 25(174) |
| 13-Oct-2019 | Nicky Smith | Wales | 07-Apr-1994 | 25(189) |
| 13-Oct-2019 | Rhys Patchell | Wales | 17-May-1993 | 26(149) |
| 13-Oct-2019 | Aled Davies | Wales | 19-Jul-1992 | 27(85) |
| 23-Sep-2019 | Tomas Francis | Wales | 27-Apr-1992 | 27(148) |
| 23-Sep-2019 | George North | Wales | 13-Apr-1992 | 27(162) |
| 23-Sep-2019 | Wyn Jones | Wales | 26-Feb-1992 | 27(209) |
| 23-Sep-2019 | Jake Ball | Wales | 21-Jun-1991 | 28(94) |
| 23-Sep-2019 | Liam Williams | Wales | 09-Apr-1991 | 28(167) |
| 23-Sep-2019 | Josh Navidi | Wales | 30-Dec-1990 | 28(267) |
| 09-Oct-2019 | James Davies | Wales | 25-Oct-1990 | 28(349) |
| 23-Sep-2019 | Gareth Davies | Wales | 18-Aug-1990 | 29(36) |
| 23-Sep-2019 | Daniel Biggar | Wales | 16-Oct-1989 | 29(342) |
| 23-Sep-2019 | Justin Tipuric | Wales | 06-Aug-1989 | 30(48) |
| 13-Oct-2019 | Leigh Halfpenny | Wales | 22-Dec-1988 | 30(295) |
| 23-Sep-2019 | Jon Davies | Wales | 05-Apr-1988 | 31(170) |
| 23-Sep-2019 | Hadleigh Parkes | Wales | 05-Oct-1987 | 31(353) |
| 13-Oct-2019 | Aaron Shingler | Wales | 07-Aug-1987 | 32(67) |
| 23-Sep-2019 | Ken Owens | Wales | 03-Jan-1987 | 32(263) |
| 23-Sep-2019 | Alan Wyn Jones | Wales | 19-Sep-1985 | 34(4) |
| 13-Oct-2019 | Bradley Davies | Wales | 09-Jan-1985 | 34(277) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).