With a number of Leinster players in the Ireland U-20 side and some former Ireland U-20s in the Leinster side, both teams knew each other very well.
Leinster notched up tries from Paul Ryan and Niall Morris. Ian McKinley converted the first try and added a penalty in the first half while Ian Madigan landed the conversion for Morris' try.
Brian Kingston and James McKinney slotted a penalty apiece for the Ireland Under-20s.
LEINSTER DEVELOPMENT: Ian Madigan; Shane Monahan, Eoin O'Malley (capt), Kyle Tonetti, Michael Keating; Ian McKinley, David Moore; Jack McGrath, Jason Harris-Wright, Jack O'Connell, Ciaran Ruddock, Mark Flanagan, Eoin Sheriff, Jordi Murphy, Paul Ryan.
Replacements used: Richardt Strauss for Harris-Wright (47 mins), Niall Morris for McKinley (61), Chris Lilly for Monahan, Richard Bent for Murphy, Darren Hudson for Keating (all 65), Martin Moore for O'Connell, Colm Mallon for Ruddock (both 75).
IRELAND UNDER-20: Andrew Conway (Blackrock College/Leinster); Tiernan O'Halloran (Galwegians/Connacht), Brendan Macken (Blackrock College/Leinster), David McSharry (UCD/Leinster), Simon Zebo (Cork Constitution/Munster); Brian Kingston (Blackrock/Leinster), Michael Heaney (Belfast Harlequins/Ulster); Denis Buckley (Creggs/Connacht), Risterard Byrne (UCD/Leinster), Stewart Maguire (Old Belvedere/Leinster), Ben Marshall (UCD/Leinster), Brian Hayes (Cork Constitution/Munster), Paddy Ryan (Highfield /Munster), Brian O'Hara (UL Bohemian/Munster (capt), Patrick Butler (Shannon/Munster).
Replacements used: Craig O'Hanlon (Shannon/Munster) for Zebo (27 mins), R O'Sullivan for O'Hara, Brian Cagney (UCC/Munster) for Buckley, James Robinson (Corinthians/Connacht) for Maguire (all half-time); David O'Callaghan (UCC/Munster) for Marshall, Rhys Ruddock (UCD/Leinster) for Ryan, Eoin Griffin (Corinthians/Connacht) for O'Halloran (all 48), David Doyle (UCD/Leinster) for Byrne, John Cooney (UCD/Leinster) for M Heaney (both 62), James McKinney (Queen's University) for Kingston (64).
Referee: David Keane (IRFU)