| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 03-May-2013 | Taufa'ao Filise | Tonga | 26-May-1977 | 35(343) |
| 23-Mar-2013 | Ceri Sweeney | Wales | 21-Jan-1980 | 33(62) |
| 28-Sep-2012 | Andy Kyriacou | England | 04-Jan-1983 | 29(268) |
| 03-May-2013 | Gavin Evans | Wales | 18-Jul-1984 | 28(289) |
| 01-Sep-2012 | Gareth Davies | Wales | 02-Mar-1984 | 28(183) |
| 03-May-2013 | Bradley Davies | Wales | 09-Jan-1985 | 28(114) |
| 03-May-2013 | Michael Paterson | New Zealand | 09-May-1985 | 27(359) |
| 02-Nov-2012 | Campese Ma'afu | Fiji | 19-Dec-1984 | 27(318) |
| 23-Mar-2013 | Benoit Bourrust | France | 16-Jun-1985 | 27(280) |
| 03-May-2013 | Daffyd Hewitt | Wales | 21-Aug-1985 | 27(255) |
| 25-Nov-2012 | Nathan Trevett | Wales | 23-Mar-1985 | 27(247) |
| 23-Mar-2013 | Chris Czekaj | Wales | 14-Dec-1985 | 27(99) |
| 26-Dec-2012 | Andries Pretorious | Wales | 26-Sep-1985 | 27(91) |
| 01-Mar-2013 | Alex Walker | Wales | 31-Jul-1986 | 26(214) |
| 20-Apr-2013 | Jamie Roberts | Wales | 08-Nov-1986 | 26(164) |
| 13-Apr-2013 | Marc Breeze | Wales | 11-Feb-1987 | 26(62) |
| 03-May-2013 | Tom James | Wales | 17-Apr-1987 | 26(17) |
| 03-May-2013 | Lou Reed | Wales | 10-Sep-1987 | 25(236) |
| 23-Mar-2013 | James Down | Wales | 29-Aug-1987 | 25(207) |
| 13-Apr-2013 | Robin Copeland | Ireland | 23-Oct-1987 | 25(173) |
| 20-Apr-2013 | Filo Paulo | Samoa | 06-Nov-1987 | 25(166) |
| 01-Mar-2013 | Richard Smith | Wales | 08-Nov-1987 | 25(114) |
| 30-Mar-2013 | Sam Hobbs | Wales | 13-May-1988 | 24(321) |
| 20-Apr-2013 | Sam Warburton | Wales | 05-Oct-1988 | 24(197) |
| 20-Apr-2013 | Leigh Halfpenny | Wales | 22-Dec-1988 | 24(119) |
| 23-Mar-2013 | Rory Watts Jones | England | 15-Dec-1988 | 24(98) |
| 23-Mar-2013 | Jason Tovey | Wales | 28-Apr-1989 | 23(329) |
| 03-May-2013 | Kristian Dacey | Wales | 25-Jul-1989 | 23(282) |
| 03-May-2013 | Scott Andrews | Wales | 01-Aug-1989 | 23(275) |
| 30-Mar-2013 | Lloyd Williams | Wales | 30-Nov-1989 | 23(120) |
| 08-Feb-2013 | Rhys Williams | Wales | 16-Jan-1990 | 23(23) |
| 26-Dec-2012 | Alex Cuthbert | Wales | 05-Apr-1990 | 22(266) |
| 03-May-2013 | Dan Fish | Wales | 19-Dec-1990 | 22(136) |
| 03-May-2013 | Josh Navidi | Wales | 30-Dec-1990 | 22(125) |
| 30-Nov-2012 | Tom Williams | Wales | 02-Apr-1991 | 21(243) |
| 20-Apr-2013 | Owen Williams | Wales | 02-Oct-1991 | 21(201) |
| 03-May-2013 | Luke Hamilton | Scotland | 07-Jan-1992 | 21(117) |
| 22-Feb-2013 | Macauley Cook | Wales | 31-Dec-1991 | 21(54) |
| 15-Feb-2013 | Thomas Young | Wales | 18-May-1992 | 20(273) |
| 03-May-2013 | Lewis Jones | Wales | 24-Nov-1992 | 20(160) |
| 03-May-2013 | Harry Robinson | Wales | 16-Apr-1993 | 20(17) |
| 03-May-2013 | Rhys Patchell | Wales | 17-May-1993 | 19(351) |
| 01-Sep-2012 | Thomas Davies | Wales | 10-Mar-1993 | 19(175) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).