| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 02-Jun-2018 | Bradley Davies | Wales | 09-Jan-1985 | 33(144) |
| 02-Dec-2017 | Alan Wyn Jones | Wales | 19-Sep-1985 | 32(74) |
| 25-Nov-2017 | Ken Owens | Wales | 03-Jan-1987 | 30(327) |
| 18-Nov-2017 | Rhys Priestland | Wales | 07-Jan-1987 | 30(316) |
| 09-Jun-2018 | Hadleigh Parkes | Wales | 05-Oct-1987 | 30(248) |
| 02-Dec-2017 | Aaron Shingler | Wales | 07-Aug-1987 | 30(118) |
| 18-Nov-2017 | Dan Lydiatt | Wales | 18-Dec-1987 | 29(336) |
| 11-Nov-2017 | Jon Davies | Wales | 05-Apr-1988 | 29(220) |
| 25-Nov-2017 | Rhys Webb | Wales | 09-Dec-1988 | 28(351) |
| 02-Dec-2017 | Leigh Halfpenny | Wales | 22-Dec-1988 | 28(345) |
| 02-Dec-2017 | Kristian Dacey | Wales | 25-Jul-1989 | 28(130) |
| 02-Dec-2017 | Scott Andrews | Wales | 01-Aug-1989 | 28(123) |
| 02-Dec-2017 | Daniel Biggar | Wales | 16-Oct-1989 | 28(47) |
| 09-Jun-2018 | Gareth Davies | Wales | 18-Aug-1990 | 27(295) |
| 16-Jun-2018 | Scott Williams | Wales | 10-Oct-1990 | 27(249) |
| 16-Jun-2018 | James Davies | Wales | 25-Oct-1990 | 27(234) |
| 18-Nov-2017 | Alex Cuthbert | Wales | 05-Apr-1990 | 27(227) |
| 02-Jun-2018 | Gareth Anscombe | Wales | 10-May-1991 | 27(23) |
| 02-Dec-2017 | Toby Faletau | Wales | 12-Nov-1990 | 27(20) |
| 02-Dec-2017 | Josh Navidi | Wales | 30-Dec-1990 | 26(338) |
| 18-Nov-2017 | Liam Williams | Wales | 09-Apr-1991 | 26(224) |
| 25-Nov-2017 | Jake Ball | Wales | 21-Jun-1991 | 26(158) |
| 16-Jun-2018 | Cory Hill | Wales | 10-Feb-1992 | 26(127) |
| 02-Jun-2018 | Tom Prydie | Wales | 23-Feb-1992 | 26(100) |
| 16-Jun-2018 | George North | Wales | 13-Apr-1992 | 26(64) |
| 16-Jun-2018 | Rob Evans | Wales | 14-Apr-1992 | 26(63) |
| 25-Nov-2017 | Owen Williams | Wales | 02-Oct-1991 | 26(55) |
| 16-Jun-2018 | Tomas Francis | Wales | 27-Apr-1992 | 26(50) |
| 16-Jun-2018 | Aled Davies | Wales | 19-Jul-1992 | 25(332) |
| 11-Nov-2017 | Owen Williams | Wales | 27-Feb-1992 | 25(258) |
| 18-Nov-2017 | Sam Cross | Wales | 26-Aug-1992 | 25(84) |
| 16-Jun-2018 | Ellis Jenkins | Wales | 29-Apr-1993 | 25(48) |
| 16-Jun-2018 | Rhys Patchell | Wales | 17-May-1993 | 25(30) |
| 09-Jun-2018 | Elliott Dee | Wales | 07-Mar-1994 | 24(94) |
| 16-Jun-2018 | Ross Moriarty | Wales | 18-Apr-1994 | 24(59) |
| 02-Jun-2018 | Nicky Smith | Wales | 07-Apr-1994 | 24(56) |
| 02-Jun-2018 | Steffan Evans | Wales | 01-Sep-1994 | 23(274) |
| 16-Jun-2018 | Hallam Amos | Wales | 24-Sep-1994 | 23(265) |
| 16-Jun-2018 | Ryan Elias | Wales | 07-Jan-1995 | 23(160) |
| 02-Jun-2018 | Tomos Williams | Wales | 01-Jan-1995 | 23(152) |
| 16-Jun-2018 | Josh Adams | Wales | 21-Apr-1995 | 23(56) |
| 16-Jun-2018 | Adam Beard | Wales | 07-Jan-1996 | 22(161) |
| 09-Jun-2018 | Dillon Lewis | Wales | 04-Jan-1996 | 22(157) |
| 09-Jun-2018 | Seb Davies | Wales | 15-May-1996 | 22(25) |
| 16-Jun-2018 | Owen Watkin | Wales | 12-Oct-1996 | 21(247) |
| 18-Nov-2017 | Leon Brown | Wales | 26-Oct-1996 | 21(23) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).