| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 30-Aug-2020 | Stephen Myler | England | 21-Jul-1984 | 36(40) |
| 30-Aug-2020 | Bradley Davies | Wales | 09-Jan-1985 | 35(234) |
| 30-Aug-2020 | Alan Wyn Jones | Wales | 19-Sep-1985 | 34(346) |
| 30-Nov-2019 | Shaun Venter | South Africa | 16-Mar-1987 | 32(259) |
| 21-Feb-2020 | Dan Lydiatt | Wales | 18-Dec-1987 | 32(65) |
| 30-Aug-2020 | Daniel Evans | Wales | 15-Nov-1988 | 31(289) |
| 30-Aug-2020 | Rhys Webb | Wales | 09-Dec-1988 | 31(265) |
| 30-Aug-2020 | Justin Tipuric | Wales | 06-Aug-1989 | 31(25) |
| 04-Jan-2020 | Ma'afu Fia | Tonga | 22-Nov-1989 | 30(43) |
| 21-Feb-2020 | Simon Gardiner | Wales | 10-Feb-1990 | 30(11) |
| 30-Aug-2020 | Tom Botha | South Africa | 31-Aug-1990 | 29(365) |
| 04-Jan-2020 | Scott Williams | Wales | 10-Oct-1990 | 29(86) |
| 27-Sep-2019 | James King | Wales | 24-Jul-1990 | 29(65) |
| 30-Aug-2020 | Gareth Evans | England | 19-Sep-1991 | 28(346) |
| 21-Feb-2020 | Hanno Dirksen | South Africa | 31-Mar-1991 | 28(327) |
| 30-Nov-2019 | Lloyd Ashley | Wales | 02-Feb-1991 | 28(301) |
| 30-Aug-2020 | Rhodri Jones | Wales | 23-Dec-1991 | 28(251) |
| 23-Aug-2020 | Sam Parry | Wales | 17-Dec-1991 | 28(250) |
| 23-Aug-2020 | George North | Wales | 13-Apr-1992 | 28(132) |
| 30-Aug-2020 | Luke Morgan | Wales | 16-May-1992 | 28(106) |
| 21-Feb-2020 | Dan Baker | Wales | 05-Jul-1992 | 27(230) |
| 21-Feb-2020 | Aled Davies | Wales | 19-Jul-1992 | 27(216) |
| 26-Dec-2019 | Marty McKenzie | New Zealand | 14-Aug-1992 | 27(133) |
| 25-Oct-2019 | Sam Cross | Wales | 26-Aug-1992 | 27(59) |
| 09-Nov-2019 | Marvin Orie | South Africa | 15-Feb-1993 | 26(267) |
| 27-Sep-2019 | Cory Allen | Wales | 11-Feb-1993 | 26(228) |
| 23-Aug-2020 | Nicky Smith | Wales | 07-Apr-1994 | 26(139) |
| 30-Aug-2020 | Oliver Cracknell | Wales | 26-May-1994 | 26(97) |
| 30-Aug-2020 | Scott Otten | Wales | 19-Jul-1994 | 26(43) |
| 09-Nov-2019 | Lesley Klim | Namibia | 16-Jan-1995 | 24(297) |
| 23-Aug-2020 | Adam Beard | Wales | 07-Jan-1996 | 24(229) |
| 21-Feb-2020 | Luke Price | Wales | 26-Sep-1995 | 24(148) |
| 30-Aug-2020 | Owen Watkin | Wales | 12-Oct-1996 | 23(322) |
| 26-Dec-2019 | Tom Williams | Wales | 03-Jul-1996 | 23(175) |
| 23-Aug-2020 | Kieran Williams | Wales | 12-Apr-1997 | 23(133) |
| 02-Nov-2019 | Matthew Aubrey | Wales | 04-Jun-1997 | 22(151) |
| 23-Aug-2020 | Morgan Morris | Wales | 28-Aug-1998 | 21(361) |
| 12-Oct-2019 | Keelan Giles | Wales | 29-Jan-1998 | 21(256) |
| 30-Aug-2020 | Tiaan Thomas-Wheeler | Wales | 19-Nov-1999 | 20(285) |
| 30-Aug-2020 | Dewi Cross | Wales | 06-Dec-1999 | 20(268) |
| 21-Feb-2020 | Cai Evans | Wales | 23-Jun-1999 | 20(243) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).