| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 04-Oct-2019 | Tiaan Thomas-Wheeler | Wales | 19-Nov-1999 | 19(319) |
| 04-Oct-2019 | Cai Evans | Wales | 23-Jun-1999 | 20(103) |
| 30-Aug-2020 | Dewi Cross | Wales | 06-Dec-1999 | 20(268) |
| 09-Nov-2019 | Morgan Morris | Wales | 28-Aug-1998 | 21(73) |
| 27-Sep-2019 | Keelan Giles | Wales | 29-Jan-1998 | 21(241) |
| 27-Sep-2019 | Matthew Aubrey | Wales | 04-Jun-1997 | 22(115) |
| 15-Feb-2020 | Kieran Williams | Wales | 12-Apr-1997 | 22(309) |
| 25-Oct-2019 | Tom Williams | Wales | 03-Jul-1996 | 23(113) |
| 15-Feb-2020 | Owen Watkin | Wales | 12-Oct-1996 | 23(125) |
| 21-Dec-2019 | Adam Beard | Wales | 07-Jan-1996 | 23(348) |
| 27-Sep-2019 | Luke Price | Wales | 26-Sep-1995 | 24(1) |
| 09-Nov-2019 | Lesley Klim | Namibia | 16-Jan-1995 | 24(297) |
| 09-Nov-2019 | Scott Otten | Wales | 19-Jul-1994 | 25(113) |
| 27-Sep-2019 | Oliver Cracknell | Wales | 26-May-1994 | 25(124) |
| 21-Dec-2019 | Nicky Smith | Wales | 07-Apr-1994 | 25(258) |
| 27-Sep-2019 | Cory Allen | Wales | 11-Feb-1993 | 26(228) |
| 02-Nov-2019 | Marvin Orie | South Africa | 15-Feb-1993 | 26(260) |
| 04-Oct-2019 | Sam Cross | Wales | 26-Aug-1992 | 27(38) |
| 04-Oct-2019 | Dan Baker | Wales | 05-Jul-1992 | 27(90) |
| 21-Dec-2019 | Marty McKenzie | New Zealand | 14-Aug-1992 | 27(128) |
| 27-Sep-2019 | Luke Morgan | Wales | 16-May-1992 | 27(133) |
| 21-Dec-2019 | Aled Davies | Wales | 19-Jul-1992 | 27(154) |
| 04-Jan-2020 | George North | Wales | 13-Apr-1992 | 27(265) |
| 27-Sep-2019 | Rhodri Jones | Wales | 23-Dec-1991 | 27(278) |
| 27-Sep-2019 | Sam Parry | Wales | 17-Dec-1991 | 27(284) |
| 27-Sep-2019 | Gareth Evans | England | 19-Sep-1991 | 28(8) |
| 25-Oct-2019 | Hanno Dirksen | South Africa | 31-Mar-1991 | 28(208) |
| 27-Sep-2019 | Lloyd Ashley | Wales | 02-Feb-1991 | 28(237) |
| 27-Sep-2019 | Scott Williams | Wales | 10-Oct-1990 | 28(352) |
| 27-Sep-2019 | Tom Botha | South Africa | 31-Aug-1990 | 29(27) |
| 27-Sep-2019 | James King | Wales | 24-Jul-1990 | 29(65) |
| 15-Feb-2020 | Simon Gardiner | Wales | 10-Feb-1990 | 30(5) |
| 30-Nov-2019 | Ma'afu Fia | Tonga | 22-Nov-1989 | 30(8) |
| 21-Dec-2019 | Justin Tipuric | Wales | 06-Aug-1989 | 30(137) |
| 27-Sep-2019 | Daniel Evans | Wales | 15-Nov-1988 | 30(316) |
| 23-Aug-2020 | Rhys Webb | Wales | 09-Dec-1988 | 31(257) |
| 27-Sep-2019 | Dan Lydiatt | Wales | 18-Dec-1987 | 31(284) |
| 04-Oct-2019 | Shaun Venter | South Africa | 16-Mar-1987 | 32(202) |
| 30-Nov-2019 | Bradley Davies | Wales | 09-Jan-1985 | 34(325) |
| 23-Aug-2020 | Alan Wyn Jones | Wales | 19-Sep-1985 | 34(339) |
| 23-Aug-2020 | Stephen Myler | England | 21-Jul-1984 | 36(33) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).