The tournament has been re-scheduled for June and July.
Laois' scrum half Will Reilly is in line for a call up to Ireland's U-20 Six Nations squad.
The Ballyfin man was part of an extended 38 man squad that took part in a two day camp with head coach Richie Murphy over the weekend.
Reilly has already represented Ireland at the U-18 age group.
16 players from Leinster, 12 from Munster, 7 from Ulster and 3 from Connacht took part.
The re-scheduled competition will take place across June and July.
Those taking part in full:
Players in attendance:
|Eoin de Buitlear (Corinthians RFC)||Connacht Academy|
|Hubert Gilvary (Sligo RFC)||NTS|
|Diarmuid McCormack (DUFC)||Connacht PTS|
|Temi Asewunmi Lasisi (Lansdowne FC)||Leinster PTS|
|Lee Barron (DUFC)||NTS|
|Jack Boyle (UCD RFC)||NTS|
|Mark Boyle (Lansdowne FC)||Leinster PTS|
|Aaron Coleman (DUFC)||Leinster PTS|
|Harry Colbert (DUFC)||Leinster PTS|
|Donal Conroy (Naas RFC)||Leinster PTS|
|Tim Corkery (UCD RFC)||NTS|
|Ben Griffin (DUFC)||Leinster PTS|
|Matthew Grogan (Old Belvedere RFC)||Leinster PTS|
|Sam Illo (Old Wesley RFC)||Leinster PTS|
|Marcus Kiely (Naas RFC)||Leinster PTS|
|Ronan Loughnane (UCD RFC)||Leinster PTS|
|Josh O’Connor (UCD RFC)||Leinster PTS|
|Will Reilly (MU Barnhall RFC)||Leinster PTS|
|Aaron Rowan (Blackrock RFC)||Leinster PTS|
|Ethan Coughlan (Shannon RFC)||NTS|
|Jack Delaney (Garryowen FC)||Munster PTS|
|Mark Donnelly (Garryowen FC)||NTS|
|John Forde (Cork Constitution FC)||Munster PTS|
|Jack Kelleher (UCC RFC)||Munster PTS|
|Aaron Leahy (CBC)||NTS|
|Conor Moloney (Ennis RFC)||NTS|
|Daniel Okeke (Shannon RFC)||NTS|
|Harry Riordan (UCC RFC)||Munster PTS|
|Jamie Shanahan (Garryowen FC)||Munster PTS|
|Jay Traynor (UL Bohemians RFC)||Munster PTS|
|Cian Whooley (UCC RFC)||Munster PTS|
|Oscar Egan (QUB RFC)||Ulster PTS|
|Conor McKee (QUB RFC)||NTS|
|George Saunderson (QUB RFC)||NTS|
|James McCormick (Ballymena RFC)||Ulster Academy|
|Lorcan McLaughlin (QUB RFC)||NTS|
|James Humphreys (QUB RFC)||Ulster PTS|
|Harry Sheridan (DUFC)||NTS|