| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 28-Oct-2017 | Luke Crosbie | Scotland | 22-Apr-1997 | 20(189) |
| 01-Sep-2017 | Blair Kinghorn | Scotland | 18-Jan-1997 | 20(226) |
| 09-Feb-2018 | Darcy Graham | Scotland | 21-Jun-1997 | 20(233) |
| 01-Sep-2017 | Jamie Ritchie | Scotland | 16-Aug-1996 | 21(16) |
| 24-Nov-2017 | Murray McCallum | Scotland | 16-Mar-1996 | 21(253) |
| 01-Sep-2017 | Magnus Bradbury | Scotland | 23-Aug-1995 | 22(10) |
| 09-Feb-2018 | Cameron Fenton | Scotland | 20-Nov-1995 | 22(82) |
| 24-Nov-2017 | Duhan van der Merwe | Scotland | 04-Jun-1995 | 22(174) |
| 24-Nov-2017 | Lewis Carmichael | Scotland | 02-May-1995 | 22(207) |
| 01-Sep-2017 | Chris Dean | Scotland | 05-Mar-1994 | 23(180) |
| 08-Sep-2017 | Damien Hoyland | Scotland | 11-Jan-1994 | 23(240) |
| 01-Dec-2017 | Jaco van der Walt | Scotland | 01-Feb-1994 | 23(303) |
| 01-Sep-2017 | Sam Hidalgo-Clyne | Scotland | 04-Aug-1993 | 24(28) |
| 15-Sep-2017 | Nathan Fowles | England | 08-Apr-1993 | 24(160) |
| 05-Jan-2018 | Mark Bennett | Scotland | 03-Feb-1993 | 24(336) |
| 05-Jan-2018 | Jordan Lay | Samoa | 05-Nov-1992 | 25(61) |
| 01-Dec-2017 | Rory Sutherland | Scotland | 24-Aug-1992 | 25(99) |
| 08-Sep-2017 | Ben Toolis | Scotland | 31-Mar-1992 | 25(161) |
| 08-Sep-2017 | Hamish Watson | Scotland | 15-Oct-1991 | 25(329) |
| 24-Nov-2017 | Viliame Mata | Fiji | 22-Oct-1991 | 26(34) |
| 01-Sep-2017 | Duncan Weir | Scotland | 10-May-1991 | 26(115) |
| 29-Sep-2017 | Glenn Bryce | Scotland | 07-Jun-1991 | 26(115) |
| 01-Sep-2017 | Solomoni Rasolea | Australia | 29-Apr-1991 | 26(126) |
| 15-Sep-2017 | Cornell du Preez | Scotland | 23-Mar-1991 | 26(177) |
| 01-Sep-2017 | Darryl Marfo | Scotland | 01-Nov-1990 | 26(305) |
| 30-Dec-2017 | Matthew Shields | England | 12-Feb-1991 | 26(322) |
| 01-Sep-2017 | Grant Gilchrist | Scotland | 09-Aug-1990 | 27(23) |
| 01-Sep-2017 | Stuart McInally | Scotland | 09-Aug-1990 | 27(23) |
| 01-Sep-2017 | Douglas Fife | Scotland | 08-Aug-1990 | 27(24) |
| 15-Sep-2017 | Simon Berghan | Scotland | 12-Jul-1990 | 27(65) |
| 29-Sep-2017 | James Johnstone | Scotland | 17-Apr-1990 | 27(165) |
| 23-Sep-2017 | Tom Brown | Scotland | 30-Mar-1990 | 27(177) |
| 29-Sep-2017 | Jason Tovey | Wales | 28-Apr-1989 | 28(154) |
| 01-Sep-2017 | Jason Harries | Wales | 14-Feb-1989 | 28(199) |
| 01-Sep-2017 | John Hardie | Scotland | 27-Jul-1988 | 29(36) |
| 08-Sep-2017 | Robbie Fruean | New Zealand | 13-Jul-1988 | 29(57) |
| 29-Sep-2017 | Fraser McKenzie | Scotland | 28-Mar-1988 | 29(185) |
| 01-Sep-2017 | Anton Bresler | Namibia | 16-Feb-1988 | 29(198) |
| 23-Sep-2017 | Phil Burleigh | Scotland | 22-Oct-1986 | 30(337) |
| 01-Sep-2017 | Willem Petrus Nel | Scotland | 30-Apr-1986 | 31(125) |
| 15-Sep-2017 | Ross Ford | Scotland | 23-Apr-1984 | 33(145) |
| 04-Nov-2017 | Neil Cochrane | England | 04-Jan-1984 | 33(305) |
| 08-Sep-2017 | Michele Rizzo | Italy | 16-Sep-1982 | 34(358) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).