| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 07-Jun-2017 | Maro Itoje | England | 28-Oct-1994 | 22(223) |
| 03-Jun-2017 | Ross Moriarty | Wales | 18-Apr-1994 | 23(46) |
| 03-Jun-2017 | Anthony Watson | England | 26-Feb-1994 | 23(97) |
| 07-Jun-2017 | Robbie Henshaw | Ireland | 12-Jun-1993 | 23(360) |
| 07-Jun-2017 | Jack Nowell | England | 11-Apr-1993 | 24(57) |
| 03-Jun-2017 | Kyle Sinckler | England | 30-Mar-1993 | 24(65) |
| 10-Jun-2017 | Tadhg Furlong | Ireland | 14-Nov-1992 | 24(208) |
| 07-Jun-2017 | Elliot Daly | England | 08-Oct-1992 | 24(242) |
| 03-Jun-2017 | Stuart Hogg | Scotland | 24-Jun-1992 | 24(344) |
| 10-Jun-2017 | George North | Wales | 13-Apr-1992 | 25(58) |
| 03-Jun-2017 | Iain Henderson | Ireland | 21-Feb-1992 | 25(103) |
| 10-Jun-2017 | Owen Farrell | England | 21-Sep-1991 | 25(263) |
| 03-Jun-2017 | Jonathan Joseph | England | 21-May-1991 | 26(14) |
| 10-Jun-2017 | Liam Williams | Wales | 09-Apr-1991 | 26(63) |
| 10-Jun-2017 | Makovina Vunipola | England | 13-Jan-1991 | 26(149) |
| 03-Jun-2017 | Toby Faletau | Wales | 12-Nov-1990 | 26(204) |
| 10-Jun-2017 | Jamie George | England | 20-Oct-1990 | 26(234) |
| 03-Jun-2017 | Joe Marler | England | 07-Jul-1990 | 26(332) |
| 07-Jun-2017 | CJ Stander | Ireland | 05-Apr-1990 | 27(63) |
| 10-Jun-2017 | George Kruis | England | 22-Feb-1990 | 27(108) |
| 07-Jun-2017 | Daniel Biggar | Wales | 16-Oct-1989 | 27(234) |
| 07-Jun-2017 | Jack McGrath | Ireland | 11-Oct-1989 | 27(239) |
| 10-Jun-2017 | Peter O'Mahony | Ireland | 17-Sep-1989 | 27(266) |
| 07-Jun-2017 | Justin Tipuric | Wales | 06-Aug-1989 | 27(305) |
| 10-Jun-2017 | Conor Murray | Ireland | 20-Apr-1989 | 28(51) |
| 07-Jun-2017 | Courtney Lawes | England | 23-Feb-1989 | 28(104) |
| 07-Jun-2017 | Leigh Halfpenny | Wales | 22-Dec-1988 | 28(167) |
| 07-Jun-2017 | Rhys Webb | Wales | 09-Dec-1988 | 28(180) |
| 03-Jun-2017 | Sam Warburton | Wales | 05-Oct-1988 | 28(241) |
| 03-Jun-2017 | Tommy Seymour | Scotland | 01-Jul-1988 | 28(337) |
| 10-Jun-2017 | Jon Davies | Wales | 05-Apr-1988 | 29(66) |
| 07-Jun-2017 | Dan Cole | England | 09-May-1987 | 30(30) |
| 10-Jun-2017 | Sean O'Brien | Ireland | 14-Feb-1987 | 30(117) |
| 03-Jun-2017 | Ben Te'o | England | 27-Jan-1987 | 30(128) |
| 07-Jun-2017 | Ken Owens | Wales | 03-Jan-1987 | 30(156) |
| 03-Jun-2017 | Greig Laidlaw | Scotland | 12-Oct-1985 | 31(234) |
| 07-Jun-2017 | Jared Payne | Ireland | 13-Oct-1985 | 31(237) |
| 03-Jun-2017 | Alan Wyn Jones | Wales | 19-Sep-1985 | 31(257) |
| 03-Jun-2017 | Jonathan Sexton | Ireland | 11-Jul-1985 | 31(328) |
| 07-Jun-2017 | James Haskell | England | 02-Apr-1985 | 32(66) |
| 03-Jun-2017 | Rory Best | Ireland | 15-Aug-1982 | 34(293) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).