| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 07-Apr-2012 | Martyn Williams | Wales | 01-Sep-1975 | 36(219) |
| 07-Apr-2012 | Xavier Rush | New Zealand | 13-Jul-1977 | 34(269) |
| 14-Jan-2012 | Taufa'ao Filise | Tonga | 26-May-1977 | 34(233) |
| 07-Apr-2012 | Dan Parks | Scotland | 26-May-1978 | 33(317) |
| 22-Jan-2012 | Paul Tito | New Zealand | 09-Jun-1978 | 33(227) |
| 07-Apr-2012 | Gethin Jenkins | Wales | 17-Nov-1980 | 31(141) |
| 14-Jan-2012 | Gavin Henson | Wales | 01-Feb-1982 | 29(347) |
| 07-Apr-2012 | Casey Laulala | New Zealand | 03-May-1982 | 29(340) |
| 14-Jan-2012 | T Rhys Thomas | Wales | 23-Apr-1982 | 29(266) |
| 22-Jan-2012 | Ryan Tyrrell | Australia | 09-Nov-1983 | 28(74) |
| 22-Jan-2012 | Gavin Evans | Wales | 18-Jul-1984 | 27(187) |
| 07-Apr-2012 | Bradley Davies | Wales | 09-Jan-1985 | 27(88) |
| 07-Apr-2012 | Michael Paterson | New Zealand | 09-May-1985 | 26(334) |
| 07-Apr-2012 | Daffyd Hewitt | Wales | 21-Aug-1985 | 26(230) |
| 22-Jan-2012 | Chris Czekaj | Wales | 14-Dec-1985 | 26(39) |
| 07-Apr-2012 | Marc Breeze | Wales | 11-Feb-1987 | 25(56) |
| 16-Dec-2011 | Jamie Roberts | Wales | 08-Nov-1986 | 25(38) |
| 07-Apr-2012 | Tom James | Wales | 17-Apr-1987 | 24(356) |
| 07-Apr-2012 | James Down | Wales | 29-Aug-1987 | 24(222) |
| 22-Jan-2012 | Sam Warburton | Wales | 05-Oct-1988 | 23(108) |
| 07-Apr-2012 | Leigh Halfpenny | Wales | 22-Dec-1988 | 23(106) |
| 07-Apr-2012 | Scott Andrews | Wales | 01-Aug-1989 | 22(250) |
| 07-Apr-2012 | Lloyd Williams | Wales | 30-Nov-1989 | 22(129) |
| 07-Apr-2012 | Alex Cuthbert | Wales | 05-Apr-1990 | 22(3) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).