| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 15-Sep-2012 | Jordan Williams | Wales | 20-Sep-1993 | 18(361) |
| 15-Sep-2012 | Samson Lee | Wales | 30-Nov-1992 | 19(289) |
| 01-Sep-2012 | George North | Wales | 13-Apr-1992 | 20(141) |
| 26-Dec-2012 | Aled Davies | Wales | 19-Jul-1992 | 20(160) |
| 01-Sep-2012 | Rhodri Jones | Wales | 23-Dec-1991 | 20(253) |
| 03-Nov-2012 | Kirby Myhill | Wales | 05-Feb-1992 | 20(272) |
| 08-Feb-2013 | Owen Williams | Wales | 27-Feb-1992 | 20(347) |
| 01-Sep-2012 | Liam Williams | Wales | 09-Apr-1991 | 21(146) |
| 25-Nov-2012 | Jake Ball | Wales | 21-Jun-1991 | 21(158) |
| 01-Sep-2012 | Scott Williams | Wales | 10-Oct-1990 | 21(327) |
| 08-Feb-2013 | Adam Warren | Wales | 07-Mar-1991 | 21(339) |
| 15-Sep-2012 | Gareth Davies | Wales | 18-Aug-1990 | 22(29) |
| 03-Nov-2012 | Kristian Phillips | Wales | 02-Sep-1990 | 22(63) |
| 01-Sep-2012 | Tavis Knoyle | Wales | 02-Jun-1990 | 22(92) |
| 02-Dec-2012 | Dan Newton | Wales | 30-Dec-1989 | 22(338) |
| 25-Nov-2012 | Criag Price | Wales | 22-Jun-1989 | 23(156) |
| 15-Sep-2012 | Nick Reynolds | Wales | 07-Apr-1989 | 23(161) |
| 03-Nov-2012 | Gareth Owen | Wales | 05-Nov-1988 | 23(363) |
| 07-Sep-2012 | Jon Davies | Wales | 05-Apr-1988 | 24(155) |
| 15-Sep-2012 | Kieran Murphy | Wales | 19-Jan-1988 | 24(240) |
| 01-Sep-2012 | Gareth Maule | Wales | 04-Dec-1987 | 24(272) |
| 07-Sep-2012 | Richard Kelly | Wales | 10-Sep-1987 | 24(363) |
| 01-Sep-2012 | Aaron Shingler | Wales | 07-Aug-1987 | 25(26) |
| 01-Sep-2012 | George Earle | South Africa | 09-Jan-1987 | 25(236) |
| 01-Sep-2012 | Ken Owens | Wales | 03-Jan-1987 | 25(242) |
| 07-Sep-2012 | Rhys Priestland | Wales | 07-Jan-1987 | 25(244) |
| 25-Nov-2012 | Emyr Phillips | Wales | 22-Feb-1987 | 25(277) |
| 01-Sep-2012 | Andrew Fenby | England | 24-Oct-1985 | 26(313) |
| 01-Sep-2012 | Robert McCusker | Wales | 12-Oct-1985 | 26(325) |
| 25-Nov-2012 | Jacobie Adriaanse | South Africa | 19-Jul-1985 | 27(129) |
| 01-Sep-2012 | Aled Thomas | Wales | 02-Jan-1985 | 27(242) |
| 26-Oct-2012 | Tomas Valleyos Cinalli | Argentina | 16-Oct-1984 | 28(10) |
| 15-Sep-2012 | Sione Timani | Tonga | 03-Sep-1984 | 28(12) |
| 26-Oct-2012 | Morgan Stoddart | Wales | 23-Sep-1984 | 28(33) |
| 07-Sep-2012 | Jon Edwards | Wales | 05-Jul-1984 | 28(64) |
| 03-Nov-2012 | Johan Snyman | South Africa | 09-Jul-1984 | 28(117) |
| 01-Sep-2012 | Josh Turnbull | Wales | 12-Mar-1984 | 28(173) |
| 15-Sep-2012 | Philip John | Wales | 25-Apr-1981 | 31(144) |
| 07-Sep-2012 | Matthew Rees | Wales | 09-Dec-1980 | 31(273) |
| 01-Sep-2012 | Deacon Manu | Fiji | 18-Feb-1979 | 33(196) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).