| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 19-May-2017 | Ryan Elias | Wales | 07-Jan-1995 | 22(133) |
| 19-May-2017 | Steffan Evans | Wales | 01-Sep-1994 | 22(261) |
| 19-May-2017 | Rhys Patchell | Wales | 17-May-1993 | 24(2) |
| 19-May-2017 | Samson Lee | Wales | 30-Nov-1992 | 24(170) |
| 19-May-2017 | Tadhg Beirne | Ireland | 01-Aug-1992 | 24(291) |
| 19-May-2017 | Rob Evans | Wales | 14-Apr-1992 | 25(35) |
| 19-May-2017 | Liam Williams | Wales | 09-Apr-1991 | 26(41) |
| 19-May-2017 | James Davies | Wales | 25-Oct-1990 | 26(207) |
| 19-May-2017 | Scott Williams | Wales | 10-Oct-1990 | 26(222) |
| 19-May-2017 | Johnny McNicholl | Wales | 24-Sep-1990 | 26(238) |
| 19-May-2017 | Gareth Davies | Wales | 18-Aug-1990 | 26(275) |
| 19-May-2017 | Lewis Rawlins | Wales | 13-Apr-1990 | 27(36) |
| 19-May-2017 | Jon Davies | Wales | 05-Apr-1988 | 29(44) |
| 19-May-2017 | Aaron Shingler | Wales | 07-Aug-1987 | 29(286) |
| 19-May-2017 | John Barclay | Scotland | 24-Sep-1986 | 30(238) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).