Blackrock College advanced to the second round with an impressive victory over Newbridge College at Templeville Road.
The game was a lot closer than the final scoreline suggests, though, with the Kildare side leading 8-5 at half-time.
Newbridge's try came when a terrific off-load by Ben O'Connell split the Blackrock defence, allowing blind-side flanker Richard Snell in for a tremendous touchdown after 13 minutes.
Blackrock levelled matters in the 18th minute. In their first venture into the Newbridge '22,' No 8 Richie Marsh broke from the back of the scrum and powerfully brushed aside tackles to touch the ball down.
The game was held up for 25 minutes as Newbridge's Eoin Dempsey was removed to hospital by ambulance after a nasty collision with Ciaran Fagan.
Peter Osbourne confidently kicked Newbridge into the lead just before half-time with a well-taken penalty.
However, it was all Blackrock in the second half. David Hogan and Tom Austin went over in quick succession for tries and, apart from another well-struck penalty from Osbourne, Newbridge never threatened.
Substitute Angus Lloyd put the game beyond doubt with Blackrock's fourth try five minutes from time.
Blackrock College -- S Barron; K O'Leary (P Conlon 62), C Mellin, M Roche, J Dempsey (A Quirke 66); C Lock (A Lloyd 64), C McCory; A Boland (M Carroll 52), D Hogan, C Maguire; D Thornbury (C Quinn, 66), P Dangan; M Connolly, T Austin (L Leonard 61), R Marsh.
Newbridge -- J Jennings; P O'Neill, C Murtagh, B O'Connell (B Delaney 70), C Cullen (D McNamara 40), P Osbourne; R Mullen; D Rigby, C Kings, B O'Donnell; E Dempsey (R Buckley 22), B Scully; R Snell (J Hogan 60), C Fagan, W O'Brien.