| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 10-Jul-2021 | Courtney Lawes | England | 23-Feb-1989 | 32(137) |
| 10-Jul-2021 | Daniel Biggar | Wales | 16-Oct-1989 | 31(268) |
| 07-Jul-2021 | Bundee Aki | Ireland | 07-Apr-1990 | 31(91) |
| 10-Jul-2021 | Gareth Davies | Wales | 18-Aug-1990 | 30(327) |
| 10-Jul-2021 | Jamie George | England | 20-Oct-1990 | 30(264) |
| 03-Jul-2021 | Toby Faletau | Wales | 12-Nov-1990 | 30(234) |
| 10-Jul-2021 | Chris Harris | Scotland | 28-Dec-1990 | 30(195) |
| 07-Jul-2021 | Josh Navidi | Wales | 30-Dec-1990 | 30(190) |
| 07-Jul-2021 | Makovina Vunipola | England | 13-Jan-1991 | 30(176) |
| 10-Jul-2021 | Liam Williams | Wales | 09-Apr-1991 | 30(93) |
| 07-Jul-2021 | Owen Farrell | England | 21-Sep-1991 | 29(290) |
| 17-Jul-2021 | Hamish Watson | Scotland | 15-Oct-1991 | 29(276) |
| 07-Jul-2021 | Iain Henderson | Ireland | 21-Feb-1992 | 29(137) |
| 03-Jul-2021 | Wyn Jones | Wales | 26-Feb-1992 | 29(128) |
| 17-Jul-2021 | Stuart Hogg | Scotland | 24-Jun-1992 | 29(23) |
| 17-Jul-2021 | Jack Conan | Ireland | 29-Jul-1992 | 28(353) |
| 17-Jul-2021 | Tadhg Beirne | Ireland | 01-Aug-1992 | 28(350) |
| 17-Jul-2021 | Rory Sutherland | Scotland | 24-Aug-1992 | 28(327) |
| 03-Jul-2021 | Finn Russell | Scotland | 23-Sep-1992 | 28(283) |
| 17-Jul-2021 | Elliot Daly | England | 08-Oct-1992 | 28(282) |
| 17-Jul-2021 | Tadhg Furlong | Ireland | 14-Nov-1992 | 28(245) |
| 03-Jul-2021 | Kyle Sinckler | England | 30-Mar-1993 | 28(95) |
| 17-Jul-2021 | Ali Price | Scotland | 12-May-1993 | 28(66) |
| 17-Jul-2021 | Robbie Henshaw | Ireland | 12-Jun-1993 | 28(35) |
| 17-Jul-2021 | Luke Cowan-Dickie | England | 20-Jun-1993 | 28(27) |
| 10-Jul-2021 | Anthony Watson | England | 26-Feb-1994 | 27(134) |
| 17-Jul-2021 | Jonny Hill | England | 08-Jun-1994 | 27(39) |
| 03-Jul-2021 | Maro Itoje | England | 28-Oct-1994 | 26(249) |
| 07-Jul-2021 | Sam Simmonds | England | 10-Nov-1994 | 26(240) |
| 17-Jul-2021 | Josh Adams | Wales | 21-Apr-1995 | 26(88) |
| 17-Jul-2021 | Duhan van der Merwe | Scotland | 04-Jun-1995 | 26(44) |
| 17-Jul-2021 | Adam Beard | Wales | 07-Jan-1996 | 25(192) |
| 07-Jul-2021 | Zander Fagerson | Scotland | 19-Jan-1996 | 25(170) |
| 07-Jul-2021 | Tom Curry | England | 15-Jun-1998 | 23(22) |
| 17-Jul-2021 | Marcus Smith | England | 14-Feb-1999 | 22(154) |
| 07-Jul-2021 | Louis Rees-Zammitt | Wales | 02-Feb-2001 | 20(155) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).