| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 04-Sep-2020 | Caelan Doris | Ireland | 02-Apr-1998 | 22(156) |
| 04-Sep-2020 | Ronan Kelleher | Ireland | 24-Jan-1998 | 22(224) |
| 04-Sep-2020 | Jordan Larmour | Ireland | 10-Jun-1997 | 23(86) |
| 12-Sep-2020 | James Ryan | Ireland | 24-Jul-1996 | 24(50) |
| 04-Sep-2020 | Hugo Keenan | Ireland | 18-Jun-1996 | 24(78) |
| 04-Sep-2020 | Will Connors | Ireland | 04-Apr-1996 | 24(153) |
| 04-Sep-2020 | Andrew Porter | Ireland | 16-Jan-1996 | 24(232) |
| 12-Sep-2020 | Ross Byrne | Ireland | 08-Apr-1995 | 25(158) |
| 04-Sep-2020 | Gary Ringrose | Ireland | 26-Jan-1995 | 25(222) |
| 04-Sep-2020 | Robbie Henshaw | Ireland | 12-Jun-1993 | 27(84) |
| 12-Sep-2020 | Josh van der Flier | Ireland | 25-Apr-1993 | 27(140) |
| 04-Sep-2020 | Luke McGrath | Ireland | 03-Feb-1993 | 27(213) |
| 04-Sep-2020 | Jack Conan | Ireland | 29-Jul-1992 | 28(37) |
| 04-Sep-2020 | James Lowe | Wales | 08-Jul-1992 | 28(58) |
| 12-Sep-2020 | Jamieson Gibson-Park | Ireland | 10-May-1992 | 28(125) |
| 04-Sep-2020 | Cian Healy | Ireland | 07-Oct-1987 | 32(333) |
| 04-Sep-2020 | Devin Toner | Ireland | 29-Jun-1986 | 34(68) |
| 04-Sep-2020 | Jonathan Sexton | Ireland | 11-Jul-1985 | 35(56) |
| 04-Sep-2020 | Scott Fardy | Australia | 05-Jul-1984 | 36(61) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).