Carlow man Ed Byrne is on the bench for Ireland as they take on Japan at the Aviva Stadium in the opening fixture of the Vodafone Summer Series.
Fellow Carlow man Tom Daly is in the Irish squad however he didn’t make the match day side.
James Ryan will wear the captain’s armband on Saturday and will be partnered in the second row by Ultan Dillane.
Peter O’Mahony starts on the blindside flank and is joined in the backrow by Josh van der Flier and Caelan Doris, who makes his international return after missing the 2021 Six Nations Championships.
The front row is made up of Dave Kilcoyne, Ronan Kelleher and Finlay Bealham.
At half-back Jamison Gibson Park will partner Joey Carbery who returns to the international scene for the first time since the Rugby World Cup in 2019. Stuart McCloskey and Chris Farrell are paired in midfield while Jacob Stockdale and Jordan Larmour on the wings and Hugo Keenan is at fullback.
The replacements include Rob Herring, Ed Byrne, John Ryan, Ryan Baird, the uncapped Gavin Coombes, Craig Casey, Billy Burns and Shane Daly.
Ireland team to play Japan – 3rd July 2021, Aviva Stadium
15. Hugo Keenan (Leinster/UCD) 11 caps
14. Jordan Larmour (Leinster/St Mary’s College) 29 caps
13. Chris Farrell (Munster/Young Munster) 14 caps
12. Stuart McCloskey (Ulster/Bangor) 4 caps
11. Jacob Stockdale (Ulster/Lurgan) 34 caps
10. Joey Carbery (Munster/Clontarf) 22 caps
9. Jamison Gibson Park (Leinster) 9 caps
1. Dave Kilcoyne (Munster/UL Bohemians) 43 caps
2. Ronan Kelleher (Leinster/Lansdowne) 11 caps
3. Finlay Bealham (Connacht/Buccaneers) 14 caps
4. Ultan Dillane (Connacht/Corinthians) 18 caps
5. James Ryan (Leinster/UCD) 35 caps captain
6. Peter O’Mahony (Munster/Cork Constitution) 75 caps
7. Josh van der Flier (Leinster/UCD) 31 caps
8. Caelan Doris (Leinster/UCD) 7 caps
16. Rob Herring (Ulster/Ballynahinch) 21 caps
17. Ed Byrne (Leinster/UCD) 4 caps
18. John Ryan (Munster/Cork Constitution) 23 caps
19. Ryan Baird (Leinster/Dublin University) 3 caps
20. Gavin Coombes (Munster/Young Munster) uncapped
21. Craig Casey (Munster/Shannon) 1 cap
22. Billy Burns (Ulster) 6 caps
23. Shane Daly (Munster/Cork Constitution) 1 cap