| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 29-Jan-2011 | Harry Robinson | Wales | 16-Apr-1993 | 17(288) |
| 13-Nov-2016 | Dane Blacker | Wales | 06-Jul-1998 | 18(131) |
| 15-Oct-2011 | Rhys Patchell | Wales | 17-May-1993 | 18(151) |
| 15-Oct-2011 | Ellis Jenkins | Wales | 29-Apr-1993 | 18(169) |
| 27-Jan-2018 | Corey Howells | Wales | 16-Jul-1999 | 18(196) |
| 29-Jan-2011 | Joseff Griffin | Wales | 01-Jun-1992 | 18(242) |
| 15-Oct-2011 | Cory Allen | Wales | 11-Feb-1993 | 18(246) |
| 01-Feb-2015 | Seb Davies | Wales | 15-May-1996 | 18(262) |
| 12-Nov-2010 | Luke Hamilton | Scotland | 07-Jan-1992 | 18(310) |
| 15-Nov-2009 | Josh Navidi | Wales | 30-Dec-1990 | 18(321) |
| 18-Nov-2016 | Owen Lane | Wales | 20-Dec-1997 | 18(334) |
| 29-Jan-2011 | Macauley Cook | Wales | 31-Dec-1991 | 19(29) |
| 13-Nov-2016 | Shane Lewis-Hughes | Wales | 20-Sep-1997 | 19(54) |
| 28-Jan-2012 | Lewis Jones | Wales | 24-Nov-1992 | 19(64) |
| 07-Nov-2014 | Garyn Smith | Wales | 12-Jul-1995 | 19(118) |
| 15-Oct-2011 | Thomas Young | Wales | 18-May-1992 | 19(149) |
| 27-Jan-2018 | Alun Lawrence | Wales | 12-Aug-1998 | 19(168) |
| 27-Jan-2017 | Kieron Assiratti | Wales | 30-Jun-1997 | 19(211) |
| 15-Oct-2011 | Cory Hill | Wales | 10-Feb-1992 | 19(247) |
| 13-Nov-2016 | Jack Davies | England | 24-Feb-1997 | 19(262) |
| 04-Oct-2008 | Leigh Halfpenny | Wales | 22-Dec-1988 | 19(286) |
| 01-Oct-2005 | Chris Czekaj | Wales | 14-Dec-1985 | 19(291) |
| 08-Nov-2009 | Rhys Williams | Wales | 16-Jan-1990 | 19(296) |
| 05-Nov-2010 | Dan Fish | Wales | 19-Dec-1990 | 19(321) |
| 27-Jan-2018 | James Botham | Wales | 22-Feb-1998 | 19(339) |
| 24-Mar-2007 | Tom James | Wales | 17-Apr-1987 | 19(341) |
| 14-Nov-2014 | Aled Summerhill | Wales | 02-Nov-1994 | 20(12) |
| 15-Oct-2011 | Owen Williams | Wales | 02-Oct-1991 | 20(13) |
| 27-Jan-2017 | Morgan Sienawski | Wales | 11-Jan-1997 | 20(16) |
| 27-Jan-2017 | Teri Morgan-Gee | Wales | 18-Dec-1996 | 20(40) |
| 13-Nov-2016 | Harri Millard | Wales | 17-Aug-1996 | 20(88) |
| 13-Nov-2016 | Jarrod Evans | Wales | 25-Jul-1996 | 20(111) |
| 30-Sep-2006 | Tom Riley | Wales | 04-Jun-1986 | 20(118) |
| 27-Jan-2017 | Corey Domachowski | Wales | 19-Sep-1996 | 20(130) |
| 01-Feb-2015 | James Sheekey | Wales | 10-Sep-1994 | 20(144) |
| 07-Nov-2014 | Harry Davies | Wales | 10-May-1994 | 20(181) |
| 31-Jan-2010 | Scott Andrews | Wales | 01-Aug-1989 | 20(183) |
| 01-Oct-2005 | Dwayne Goodfield | Wales | 17-Feb-1985 | 20(226) |
| 08-Nov-2013 | Thomas Davies | Wales | 10-Mar-1993 | 20(243) |
| 05-Nov-2010 | James Loxton | Wales | 02-Feb-1990 | 20(276) |
| 13-Nov-2016 | Dillon Lewis | Wales | 04-Jan-1996 | 20(314) |
| 29-Jan-2011 | Rhys Downes | Wales | 10-Mar-1990 | 20(325) |
| 05-Nov-2010 | Lloyd Williams | Wales | 30-Nov-1989 | 20(340) |
| 26-Oct-2007 | Jamie Roberts | Wales | 08-Nov-1986 | 20(352) |
| 14-Nov-2014 | Owen Jenkins | Wales | 20-Jul-1993 | 21(117) |
| 31-Jan-2010 | Sam Warburton | Wales | 05-Oct-1988 | 21(118) |
| 01-Oct-2005 | Lee Thomas | Wales | 02-Jun-1984 | 21(121) |
| 29-Jan-2011 | Kristian Dacey | Wales | 25-Jul-1989 | 21(188) |
| 09-Nov-2012 | Tom Williams | Wales | 02-Apr-1991 | 21(222) |
| 31-Jan-2010 | Sam Hobbs | Wales | 13-May-1988 | 21(263) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).