| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 11-Nov-2016 | Peter Edwards | Wales | 12-Aug-1980 | 36(91) |
| 09-Apr-2006 | John Davies | Wales | 01-Feb-1971 | 35(68) |
| 28-Jan-2012 | Iestyn Thomas | Wales | 15-Dec-1976 | 35(44) |
| 01-Feb-2014 | Deacon Manu | Fiji | 18-Feb-1979 | 34(349) |
| 28-Oct-2007 | Garan Evans | Wales | 16-Feb-1973 | 34(254) |
| 01-Nov-2008 | Kees Meeuws | New Zealand | 26-Jul-1974 | 34(99) |
| 11-Mar-2012 | Stephen Jones | Wales | 08-Dec-1977 | 34(94) |
| 31-Jan-2015 | Philip John | Wales | 25-Apr-1981 | 33(281) |
| 01-Nov-2008 | Simon Easterby | Ireland | 27-Jan-1975 | 33(279) |
| 06-Nov-2010 | Vernon Cooper | Wales | 12-Jun-1977 | 33(147) |
| 05-Oct-2008 | Simon Maling | New Zealand | 03-Jun-1975 | 33(125) |
| 06-Oct-2006 | Inoke Afeaki | Tonga | 12-Jul-1973 | 33(86) |
| 01-Nov-2008 | Nathan Thomas | Wales | 22-Jan-1976 | 32(284) |
| 07-Feb-2015 | Rhys Thomas | Wales | 31-Jul-1982 | 32(191) |
| 02-Nov-2007 | Dafydd James | Wales | 24-Jul-1975 | 32(101) |
| 01-Nov-2008 | Sililo Martens | Tonga | 27-Apr-1977 | 31(189) |
| 05-Oct-2008 | Gavin Thomas | Wales | 22-Oct-1977 | 30(349) |
| 27-Jan-2018 | Emyr Phillips | Wales | 22-Feb-1987 | 30(340) |
| 24-Jan-2014 | Josh Turnbull | Wales | 12-Mar-1984 | 29(318) |
| 02-Dec-2005 | Hottie Louw | South Africa | 02-Mar-1976 | 29(275) |
| 01-Feb-2014 | Johan Snyman | South Africa | 09-Jul-1984 | 29(207) |
| 04-Feb-2012 | Damian Welch | Wales | 28-Jul-1982 | 29(191) |
| 14-Nov-2009 | David Lyons | Australia | 16-Jun-1980 | 29(151) |
| 24-Jan-2014 | Sione Timani | Tonga | 03-Sep-1984 | 29(143) |
| 01-Nov-2008 | Dafydd Jones | Wales | 24-Jun-1979 | 29(131) |
| 01-Dec-2007 | James Hayter | England | 14-Aug-1978 | 29(109) |
| 03-Feb-2017 | Richard Smith | Wales | 08-Nov-1987 | 29(88) |
| 02-Feb-2018 | Phil Price | Wales | 10-Nov-1988 | 29(84) |
| 28-Oct-2007 | Matthew Watkins | Wales | 02-Sep-1978 | 29(56) |
| 30-Jan-2010 | Matthew Rees | Wales | 09-Dec-1980 | 29(52) |
| 14-Nov-2014 | Robert McCusker | Wales | 12-Oct-1985 | 29(33) |
| 03-Feb-2017 | Gethin Robinson | Wallis and Futuna | 21-Jan-1988 | 29(14) |
| 24-Oct-2008 | Mark Jones | Wales | 14-Oct-1979 | 29(11) |
| 01-Dec-2007 | Adam Eustace | England | 09-Jan-1979 | 28(326) |
| 08-Nov-2013 | Aled Thomas | Wales | 02-Jan-1985 | 28(310) |
| 15-Oct-2011 | Rhodri Gomer Davies | Wales | 11-Jan-1983 | 28(277) |
| 01-Dec-2007 | Scott MacLeod | Scotland | 03-Mar-1979 | 28(273) |
| 08-Nov-2013 | Sean Hopkins | England | 23-Feb-1985 | 28(258) |
| 24-Jan-2014 | Jacobie Adriaanse | South Africa | 19-Jul-1985 | 28(189) |
| 30-Jan-2010 | Rob Higgitt | England | 12-Aug-1981 | 28(171) |
| 17-Nov-2012 | Jon Edwards | Wales | 05-Jul-1984 | 28(135) |
| 27-Jan-2017 | Gareth Owen | Wales | 05-Nov-1988 | 28(83) |
| 28-Jan-2012 | Adam Powell | Wales | 27-Dec-1983 | 28(32) |
| 01-Nov-2008 | Regan King | New Zealand | 02-Oct-1980 | 28(30) |
| 31-Jan-2015 | Ken Owens | Wales | 03-Jan-1987 | 28(28) |
| 02-Dec-2005 | Dorian Williams | Wales | 10-Nov-1977 | 28(22) |
| 31-Jan-2015 | George Earle | South Africa | 09-Jan-1987 | 28(22) |
| 02-Nov-2007 | Alix Popham | Wales | 17-Oct-1979 | 28(16) |
| 06-Feb-2011 | Joseph Ajuma | England | 25-Jan-1983 | 28(12) |
| 27-Jan-2017 | Dylan Evans | Australia | 25-Jan-1989 | 28(2) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).