| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 05-Dec-2020 |  Jonathan Sexton | Ireland | Ireland | 11-Jul-1985 | 35(148) |
| 05-Dec-2020 |  Alan Wyn Jones | Wales | Wales | 19-Sep-1985 | 35(78) |
| 21-Nov-2020 |  Jaba Bregvadze | Georgia | Georgia | 23-Apr-1987 | 33(213) |
| 05-Dec-2020 | Keith Earls | Ireland | Ireland | 02-Oct-1987 | 33(65) |
| 05-Dec-2020 | Cian Healy | Ireland | Ireland | 07-Oct-1987 | 33(60) |
| 05-Dec-2020 | Alexander Todua | Georgia | Georgia | 02-Nov-1987 | 33(34) |
| 05-Dec-2020 |  Nemani Nadolo | Fiji | Fiji | 31-Jan-1988 | 32(309) |
| 21-Nov-2020 | Lasha Khmaladze | Georgia | Georgia | 20-Jan-1988 | 32(306) |
| 05-Dec-2020 | Jon Davies | Wales | Wales | 05-Apr-1988 | 32(244) |
| 05-Dec-2020 | Levani Botia | Fiji | Fiji | 28-Apr-1988 | 32(221) |
| 05-Dec-2020 | Shalva Mamukashvili | Georgia | Georgia | 02-Oct-1988 | 32(64) |
| 28-Nov-2020 | Leigh Halfpenny | Wales | Wales | 22-Dec-1988 | 31(342) |
| 05-Dec-2020 | Conor Murray | Ireland | Ireland | 20-Apr-1989 | 31(229) |
| 05-Dec-2020 | Kini Murimurivalu | Fiji | Fiji | 15-May-1989 | 31(204) |
| 22-Nov-2020 |  Bernard Le Roux | France | France | 04-Jun-1989 | 31(171) |
| 05-Dec-2020 |  Fraser Brown | Scotland | Scotland | 20-Jun-1989 | 31(168) |
| 05-Dec-2020 | Justin Tipuric | Wales | Wales | 06-Aug-1989 | 31(122) |
| 06-Dec-2020 |  Ben Youngs | England | England | 05-Sep-1989 | 31(93) |
| 05-Dec-2020 | Duncan Taylor | Scotland | Scotland | 05-Sep-1989 | 31(91) |
| 05-Dec-2020 | Peter O'Mahony | Ireland | Ireland | 17-Sep-1989 | 31(80) |
| 28-Nov-2020 | Daniel Biggar | Wales | Wales | 16-Oct-1989 | 31(44) |
| 28-Nov-2020 | Lloyd Williams | Wales | Wales | 30-Nov-1989 | 30(364) |
| 06-Dec-2020 | Jonny May | England | England | 01-Apr-1990 | 30(250) |
| 05-Dec-2020 | CJ Stander | Ireland | Ireland | 05-Apr-1990 | 30(245) |
| 05-Dec-2020 | Bundee Aki | Ireland | Ireland | 07-Apr-1990 | 30(243) |
| 06-Dec-2020 | Brice Dulin | France | France | 13-Apr-1990 | 30(238) |
| 05-Dec-2020 | Robert Herring | Ireland | Ireland | 27-Apr-1990 | 30(223) |
| 05-Dec-2020 | Mikheil Nariashvili | Georgia | Georgia | 25-May-1990 | 30(195) |
| 05-Dec-2020 | Peni Ravai | Fiji | Fiji | 16-Jun-1990 | 30(173) |
| 22-Nov-2020 | Simon Berghan | Scotland | Scotland | 12-Jul-1990 | 30(134) |
| 14-Nov-2020 | Stuart McInally | Scotland | Scotland | 09-Aug-1990 | 30(98) |
| 13-Nov-2020 | Gareth Davies | Wales | Wales | 18-Aug-1990 | 30(88) |
| 22-Nov-2020 | Romain Taofifenua | France | France | 14-Sep-1990 | 30(70) |
| 21-Nov-2020 | Johnny McNicholl | Wales | Wales | 24-Sep-1990 | 30(59) |
| 06-Dec-2020 | Jamie George | England | England | 20-Oct-1990 | 30(48) |
| 05-Dec-2020 | Toby Faletau | Wales | Wales | 12-Nov-1990 | 30(24) |
| 21-Nov-2020 | Quinn Roux | Ireland | Ireland | 30-Oct-1990 | 30(23) |
| 29-Nov-2020 | Nodo Tcheishvili | Georgia | Georgia | 13-Nov-1990 | 30(17) |
| 05-Dec-2020 | Blade Thomson | Scotland | Scotland | 04-Dec-1990 | 30(2) |
| 05-Dec-2020 | Chris Harris | Scotland | Scotland | 28-Dec-1990 | 29(343) |
| 05-Dec-2020 | Ben Volavola | Fiji | Fiji | 13-Jan-1991 | 29(327) |
| 28-Nov-2020 | Makovina Vunipola | England | England | 13-Jan-1991 | 29(320) |
| 05-Dec-2020 | Liam Williams | Wales | Wales | 09-Apr-1991 | 29(241) |
| 06-Dec-2020 | Joe Launchberry | England | England | 12-Apr-1991 | 29(239) |
| 05-Dec-2020 |  Luca Bigi | Italy | Italy | 19-Apr-1991 | 29(231) |
| 14-Nov-2020 | Giga Tkhilaishvili | Georgia | Georgia | 08-Apr-1991 | 29(221) |
| 28-Nov-2020 | Jean Pascal Barraque | France | France | 24-Apr-1991 | 29(219) |
| 22-Nov-2020 | Duncan Weir | Scotland | Scotland | 10-May-1991 | 29(197) |
| 28-Nov-2020 | Jonathan Joseph | England | England | 21-May-1991 | 29(192) |
| 28-Nov-2020 | Jake Ball | Wales | Wales | 21-Jun-1991 | 29(161) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).