| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 26-Oct-2018 | Harri Morgan | Wales | 16-Mar-2000 | 18(224) |
| 26-Oct-2018 | Tiaan Thomas-Wheeler | Wales | 19-Nov-1999 | 18(342) |
| 25-Jan-2019 | Dewi Cross | Wales | 06-Dec-1999 | 19(50) |
| 02-Nov-2018 | Cai Evans | Wales | 23-Jun-1999 | 19(132) |
| 02-Nov-2018 | Will Jones | Wales | 03-Dec-1998 | 19(334) |
| 14-Sep-2018 | Morgan Morris | Wales | 28-Aug-1998 | 20(17) |
| 26-Oct-2018 | Keelan Giles | Wales | 29-Jan-1998 | 20(270) |
| 15-Feb-2019 | Matthew Aubrey | Wales | 04-Jun-1997 | 21(256) |
| 31-Aug-2018 | Owen Watkin | Wales | 12-Oct-1996 | 21(323) |
| 08-Sep-2018 | Tom Williams | Wales | 03-Jul-1996 | 22(67) |
| 14-Sep-2018 | Joe Thomas | Wales | 21-Feb-1996 | 22(206) |
| 14-Sep-2018 | Adam Beard | Wales | 07-Jan-1996 | 22(251) |
| 31-Aug-2018 | Luke Price | Wales | 26-Sep-1995 | 22(340) |
| 31-Aug-2018 | Scott Otten | Wales | 19-Jul-1994 | 24(43) |
| 14-Sep-2018 | Oliver Cracknell | Wales | 26-May-1994 | 24(111) |
| 31-Aug-2018 | Nicky Smith | Wales | 07-Apr-1994 | 24(146) |
| 08-Sep-2018 | Sam Davies | Wales | 06-Oct-1993 | 24(337) |
| 22-Dec-2018 | Gareth Thomas | Wales | 02-Aug-1993 | 25(142) |
| 14-Sep-2018 | Cory Allen | Wales | 11-Feb-1993 | 25(215) |
| 23-Nov-2018 | Johnny Kotze | South Africa | 24-Jan-1993 | 25(303) |
| 14-Sep-2018 | Sam Cross | Wales | 26-Aug-1992 | 26(19) |
| 31-Aug-2018 | Aled Davies | Wales | 19-Jul-1992 | 26(43) |
| 15-Feb-2019 | Jordan Lay | Samoa | 05-Nov-1992 | 26(102) |
| 14-Sep-2018 | Tom Habberfield | Wales | 19-May-1992 | 26(118) |
| 14-Sep-2018 | Luke Morgan | Wales | 16-May-1992 | 26(121) |
| 31-Aug-2018 | George North | Wales | 13-Apr-1992 | 26(140) |
| 14-Sep-2018 | Rhodri Jones | Wales | 23-Dec-1991 | 26(266) |
| 31-Aug-2018 | Hanno Dirksen | South Africa | 31-Mar-1991 | 27(153) |
| 26-Oct-2018 | Lloyd Ashley | Wales | 02-Feb-1991 | 27(266) |
| 31-Aug-2018 | Scott Williams | Wales | 10-Oct-1990 | 27(325) |
| 31-Aug-2018 | Tom Botha | South Africa | 31-Aug-1990 | 28(0) |
| 31-Aug-2018 | James King | Wales | 24-Jul-1990 | 28(38) |
| 29-Sep-2018 | Ma'afu Fia | Tonga | 22-Nov-1989 | 28(311) |
| 31-Aug-2018 | Justin Tipuric | Wales | 06-Aug-1989 | 29(25) |
| 31-Aug-2018 | Daniel Evans | Wales | 15-Nov-1988 | 29(289) |
| 14-Sep-2018 | Scott Baldwin | Wales | 12-Jul-1988 | 30(64) |
| 31-Aug-2018 | Dan Lydiatt | Wales | 18-Dec-1987 | 30(257) |
| 31-Aug-2018 | Alan Wyn Jones | Wales | 19-Sep-1985 | 32(346) |
| 26-Oct-2018 | Robert McCusker | Wales | 12-Oct-1985 | 33(14) |
| 14-Sep-2018 | James Hook | Wales | 27-Jun-1985 | 33(79) |
| 31-Aug-2018 | Bradley Davies | Wales | 09-Jan-1985 | 33(234) |
| 14-Sep-2018 | Giorgi Nemsadze | Georgia | 26-Sep-1984 | 33(353) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).