| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 18-Mar-2023 |  Jonathan Sexton | Ireland | Ireland | 11-Jul-1985 | 37(250) |
| 18-Mar-2023 |  Alan Wyn Jones | Wales | Wales | 19-Sep-1985 | 37(180) |
| 04-Feb-2023 |  Willem Petrus Nel | Scotland | Scotland | 30-Apr-1986 | 36(280) |
| 18-Mar-2023 | Ken Owens | Wales | Wales | 03-Jan-1987 | 36(74) |
| 18-Mar-2023 | Rhys Webb | Wales | Wales | 09-Dec-1988 | 34(99) |
| 25-Feb-2023 | Leigh Halfpenny | Wales | Wales | 22-Dec-1988 | 34(65) |
| 12-Mar-2023 | Conor Murray | Ireland | Ireland | 20-Apr-1989 | 33(326) |
| 18-Mar-2023 | Justin Tipuric | Wales | Wales | 06-Aug-1989 | 33(224) |
| 12-Mar-2023 | Richie Gray | Scotland | Scotland | 24-Aug-1989 | 33(200) |
| 18-Mar-2023 | Peter O'Mahony | Ireland | Ireland | 17-Sep-1989 | 33(182) |
| 18-Mar-2023 | Daniel Biggar | Wales | Wales | 16-Oct-1989 | 33(153) |
| 18-Mar-2023 |  Uini Atonio | France | France | 26-Mar-1990 | 32(357) |
| 18-Mar-2023 | Bundee Aki | Ireland | Ireland | 07-Apr-1990 | 32(345) |
| 11-Feb-2023 | Robert Herring | Ireland | Ireland | 27-Apr-1990 | 32(290) |
| 26-Feb-2023 | Grant Gilchrist | Scotland | Scotland | 09-Aug-1990 | 32(201) |
| 18-Mar-2023 | Romain Taofifenua | France | France | 14-Sep-1990 | 32(185) |
| 18-Mar-2023 |  Jamie George | England | England | 20-Oct-1990 | 32(149) |
| 18-Mar-2023 | Toby Faletau | Wales | Wales | 12-Nov-1990 | 32(126) |
| 18-Mar-2023 | George Turner | Scotland | Scotland | 03-Jan-1991 | 32(74) |
| 18-Mar-2023 |  Luca Morisi | Italy | Italy | 22-Feb-1991 | 32(24) |
| 11-Mar-2023 | Liam Williams | Wales | Wales | 09-Apr-1991 | 31(336) |
| 18-Mar-2023 | Manu Tuilagi | England | England | 18-May-1991 | 31(305) |
| 18-Mar-2023 | Owen Farrell | England | England | 21-Sep-1991 | 31(178) |
| 18-Mar-2023 | Hamish Watson | Scotland | Scotland | 15-Oct-1991 | 31(154) |
| 25-Feb-2023 | Finley Bealham | Ireland | Ireland | 09-Oct-1991 | 31(139) |
| 18-Mar-2023 | Wyn Jones | Wales | Wales | 26-Feb-1992 | 31(20) |
| 12-Mar-2023 | Iain Henderson | Ireland | Ireland | 21-Feb-1992 | 31(20) |
| 11-Mar-2023 | Owen Williams | Wales | Wales | 27-Feb-1992 | 31(12) |
| 18-Mar-2023 | George North | Wales | Wales | 13-Apr-1992 | 30(339) |
| 18-Mar-2023 | Tomas Francis | Wales | Wales | 27-Apr-1992 | 30(325) |
| 18-Mar-2023 | Jamieson Gibson-Park | Ireland | Ireland | 10-May-1992 | 30(312) |
| 18-Mar-2023 | Ignacio Brex | Italy | Argentina | 26-May-1992 | 30(296) |
| 12-Mar-2023 | Stuart Hogg | Scotland | Scotland | 24-Jun-1992 | 30(261) |
| 18-Mar-2023 | James Lowe | Ireland | Wales | 08-Jul-1992 | 30(253) |
| 25-Feb-2023 | Jack Conan | Ireland | Ireland | 29-Jul-1992 | 30(211) |
| 25-Feb-2023 | Stuart McCloskey | Ireland | Ireland | 06-Aug-1992 | 30(203) |
| 11-Feb-2023 | Tadhg Beirne | Ireland | Ireland | 01-Aug-1992 | 30(194) |
| 12-Mar-2023 | Finn Russell | Scotland | Scotland | 23-Sep-1992 | 30(170) |
| 18-Mar-2023 | Jonathan Danty | France | France | 07-Oct-1992 | 30(162) |
| 18-Mar-2023 | Tadhg Furlong | Ireland | Ireland | 14-Nov-1992 | 30(124) |
| 11-Mar-2023 | Paul Willemse | France | France | 13-Nov-1992 | 30(118) |
| 18-Mar-2023 | Henry Slade | England | England | 19-Mar-1993 | 29(364) |
| 18-Mar-2023 | Kyle Sinckler | England | England | 30-Mar-1993 | 29(353) |
| 18-Mar-2023 | Josh van der Flier | Ireland | Ireland | 25-Apr-1993 | 29(327) |
| 18-Mar-2023 | Tommaso Allan | Italy | Italy | 26-Apr-1993 | 29(326) |
| 18-Mar-2023 | Charles Ollivon | France | France | 11-May-1993 | 29(311) |
| 11-Mar-2023 | Edoardo Padovani | Italy | Italy | 15-May-1993 | 29(300) |
| 18-Mar-2023 | Robbie Henshaw | Ireland | Ireland | 12-Jun-1993 | 29(279) |
| 11-Mar-2023 | Dorian Aldegheri | France | France | 04-Aug-1993 | 29(219) |
| 25-Feb-2023 | Gareth Thomas | Wales | Wales | 02-Aug-1993 | 29(207) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).