With Belvedere College going out unexpectedly at home to Ardscoil Rathangan on Monday, St Paul's College from Raheny will now fly the flag for Leinster as the U19A Boys Cup reaches the quarter-final stage.
Belvedere, having won the national league after a dramatic win against Malachy's in March, went out on a 49-70 scoreline at the ALSAA.
Rathangan's reward is a last eight pairing with Calasanctius Oranmore, an unenviable one to say the least.
Oranmore played to a packed gym at Whitehall last month when star turn and Irish international Eoin Rockall led the Galway boys to an 80-70 first round win over St Aidan's CBS.
The point gaurd is being tipped for a bright future and he pitched in a 37-point haul against St Mary's Diocesan from Drogheda in round two to book their place in the last eight.
Oranmore last won the blue riband cup in 2010 when they beat Joey Boylan's St Benildus side but pitted in the same part of the draw as reigning holders, St Malachy's Belfast, it will be a tough to regain the trophy.
Malachy's have lost the Quinn twins from last year but have reached the quarter-finals with minimum fuss with Odhran Eastwood leading the scoring on 20 points in the second round win over St Clement's College
As for Paul's, they will be buoyed by their terrfic 48-41 round two win over neigbhbours St Fintan's where Alex Talpau played all four quarters to contribute a handsome 23 points.
Paul's, under coach and premier league player Conor Gordon, have steadily moved up the ranks and Talpau, who is on the periphery of Killester's premier league squad, has certainly taken up the mantle since Paddy Sullivan's departure.
Talpau, who was formerly on the roster at Plymouth Raiders, has been Paul's driving force in the past two seasons where he helped them to the U19B league title with victory over St Columb's from Derry in 2012 at the National Arena in Tallaght.
And two years on, the landscape has certainly changed with the three big schools, Coláiste éanna, St Fintan's and Pres Bray, all falling by the wayside this season.
Gordon has certainly come along way since his days in St Fintan's and has put together a team with plenty of quality with Ryan Donegan, Adam Lambert and Jack Kelly all capable of causing damage alongside the aforementioned Talpau.
Meanwhile in the U19A Girls' Cup quarter finals, Loreto Beaufort and Malahide CS both have tricky away ties against Christ King Cork and St Vincent's SS respectively
Beaufort were mightily impressive in the last round when Lauren Flynn and Aoife Hughes inspired from the front in their 51-31 win away to Coláiste íosagáin
Their quarter-final pairing, with Christ King Cork, is a repeat of their 2012 fixture in Rathfarnham when Katie Leneghan and Hannah McCarthy guided the Leesiders to a 13-point victory over Neville Charles team. with both available for this return clash in Cork