Thanks to superb touch-downs from Stephen Kilgallen and centre Kyle Dixon, as well as a 15th minute penalty try, ’Rock held a commanding 19-6 interval lead.
Further tries arrived for the defending champions through Kilgallen (his second) and Peter O’Reilly after the restart, and despite conceding a late five-pointer to Terenure centre Ted O’Donoghue, Blackrock had the final say with a perfectly-crafted Tommy O’Brien effort in stoppage-time.
Scorers for Blackrock College: S Kilgallen 2 tries, K Dixon, T O’Brien try each, penalty try, P O’Reilly try, pen, 2 cons, J Fennelly con.
Scorers for Terenure College: T O’Donoghue try, M Fabian 2 pens.
BLACKROCK COLLEGE: P O’Reilly; T O’Brien, G Mullin, K Dixon (M Dwan 63), S Kilgallen; C Dean (J Fennelly 63), P Patterson (M O’Leary 60); M Reidy (E Burns 63), H Kean (M O’Neill 63), J Condon (R Mouatt 54); D Mullane (C Ryan 54), V Mantegazza; R Dunne, M McMahon (A Murphy 60), C Doris.
TERENURE COLLEGE: S O’Shea; G O’Reilly (Z Vaughan 26), T O’Donoghue, C Cooke, J O’Sullivan; M Haddock (S Barry 71), M Fabian (J Nolan 71); J Boyden (J Mullarky 42), O Wigglesworth (J Henry Hayes 71), S Collins (P Tonge 71); J Durkin (L O’Dea 40), M Caffery; C Seery (C O’Sullivan 40), J Dignam, R Murray.
Referee: D Philips (Leinster Rugby Branch).