| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 18-Mar-2017 |  Rory Best | Ireland | Ireland | 15-Aug-1982 | 34(216) |
| 18-Mar-2017 |  Lorenzo Cittadini | Italy | Italy | 17-Dec-1982 | 34(92) |
| 10-Mar-2017 | Robert Kearney | Ireland | Ireland | 26-Mar-1983 | 33(350) |
| 18-Mar-2017 | Sergio Parisse | Italy | Italy | 12-Sep-1983 | 33(188) |
| 18-Mar-2017 | Donnacha Ryan | Ireland | Ireland | 11-Dec-1983 | 33(98) |
| 18-Mar-2017 | James Heaslip | Ireland | Ireland | 15-Dec-1983 | 33(94) |
| 18-Mar-2017 |  Ross Ford | Scotland | Scotland | 23-Apr-1984 | 32(329) |
| 11-Mar-2017 | Dries van Schalkwyk | Italy | Italy | 21-Dec-1984 | 32(80) |
| 11-Mar-2017 | Leonardo Ghiraldini | Italy | Italy | 26-Dec-1984 | 32(75) |
| 18-Mar-2017 |  James Haskell | England | England | 02-Apr-1985 | 31(350) |
| 18-Mar-2017 | Jonathan Sexton | Ireland | Ireland | 11-Jul-1985 | 31(250) |
| 18-Mar-2017 | Mike Brown | England | England | 04-Sep-1985 | 31(196) |
| 18-Mar-2017 |  Alan Wyn Jones | Wales | Wales | 19-Sep-1985 | 31(181) |
| 18-Mar-2017 | George Fabio Biagi | Italy | Italy | 04-Oct-1985 | 31(165) |
| 18-Mar-2017 | Jared Payne | Ireland | Ireland | 13-Oct-1985 | 31(157) |
| 12-Feb-2017 | Greig Laidlaw | Scotland | Scotland | 12-Oct-1985 | 31(123) |
| 04-Feb-2017 |  Damien Chouly | France | France | 27-Nov-1985 | 31(70) |
| 18-Mar-2017 | Louis Picamoles | France | France | 05-Feb-1986 | 31(41) |
| 18-Mar-2017 | Dylan Hartley | England | England | 24-Mar-1986 | 30(360) |
| 25-Feb-2017 | Scott Spedding | France | France | 04-May-1986 | 30(298) |
| 11-Mar-2017 | Julian Le Devedec | France | France | 04-Jun-1986 | 30(281) |
| 18-Mar-2017 | Guilhem Guirado | France | France | 17-Jun-1986 | 30(275) |
| 10-Mar-2017 | Devin Toner | Ireland | Ireland | 29-Jun-1986 | 30(255) |
| 18-Mar-2017 | John Barclay | Scotland | Scotland | 24-Sep-1986 | 30(176) |
| 12-Feb-2017 | Joshua Strauss | Scotland | Scotland | 23-Oct-1986 | 30(113) |
| 04-Feb-2017 | Tom Wood | England | England | 03-Nov-1986 | 30(94) |
| 18-Mar-2017 | Ken Owens | Wales | Wales | 03-Jan-1987 | 30(75) |
| 26-Feb-2017 | Danny Care | England | England | 02-Jan-1987 | 30(56) |
| 18-Mar-2017 | Sean O'Brien | Ireland | Ireland | 14-Feb-1987 | 30(33) |
| 25-Feb-2017 | Yohan Huget | France | France | 26-Jan-1987 | 30(31) |
| 26-Feb-2017 | Ben Te'o | England | England | 27-Jan-1987 | 30(31) |
| 18-Mar-2017 | Gordon Reid | Scotland | Scotland | 04-Mar-1987 | 30(15) |
| 18-Mar-2017 | Dan Cole | England | England | 09-May-1987 | 29(314) |
| 18-Mar-2017 | Luke McLean | Italy | Italy | 11-May-1987 | 29(312) |
| 18-Mar-2017 | Tim Visser | Scotland | Scotland | 29-May-1987 | 29(294) |
| 18-Mar-2017 | Keith Earls | Ireland | Ireland | 02-Oct-1987 | 29(168) |
| 11-Feb-2017 | Cian Healy | Ireland | Ireland | 07-Oct-1987 | 29(128) |
| 18-Mar-2017 | Yohan Maestri | France | France | 14-Jan-1988 | 29(64) |
| 18-Mar-2017 | Jon Davies | Wales | Wales | 05-Apr-1988 | 28(347) |
| 18-Mar-2017 | Tommy Seymour | Scotland | Scotland | 01-Jul-1988 | 28(260) |
| 25-Feb-2017 | John Hardie | Scotland | Scotland | 27-Jul-1988 | 28(213) |
| 18-Mar-2017 | Sam Warburton | Wales | Wales | 05-Oct-1988 | 28(164) |
| 12-Feb-2017 | Sean Maitland | Scotland | Scotland | 14-Sep-1988 | 28(151) |
| 11-Mar-2017 | Simone Favaro | Italy | Italy | 07-Nov-1988 | 28(124) |
| 18-Mar-2017 | Rhys Webb | Wales | Wales | 09-Dec-1988 | 28(99) |
| 18-Mar-2017 | Leigh Halfpenny | Wales | Wales | 22-Dec-1988 | 28(86) |
| 18-Mar-2017 | Courtney Lawes | England | England | 23-Feb-1989 | 28(23) |
| 18-Mar-2017 | Camille Lopez | France | France | 03-Apr-1989 | 27(349) |
| 10-Mar-2017 | Conor Murray | Ireland | Ireland | 20-Apr-1989 | 27(324) |
| 18-Mar-2017 | Ryan Wilson | Scotland | Scotland | 18-May-1989 | 27(304) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).