Gonzaga College - 10 CBC Monkstown - 9 A try in the 47th minute from Irish Schools full back Ross McCarron was the decisive moment in a tension-filled Leinster Schools' Section B Senior Cup first-round match at Lakelands Park yesterday.

McCarron supplied the finishing touches to a powerful run from his big outhalf Simon Morrissey. The outhalf bounced off at least four Monkstown players in a 50-metre run that was cut short 15 metres from the try-line only for McCarron to appear on his shoulder to take the ball home.Morrissey's conversion made it 10-6.

It was the first time Gonzaga had been in front. They had first use of a strong wind but that did not seem to suit their game and Monkstown led at half-time 6-3. Two Mark Tuthill penalties in the ninth and 20th minutes, sandwiched a Morrissey reply in the 14th minute.

It looked as though Monkstown had done most of the hard work but McCarron's try gave them the impetus. CBS's Tuthill struck a 55th-minute penalty to leave the minimum between the sides but they couldn't get their hands on the ball with any great regularity.

GONZAGA: R McCarron; R O'Connor, G King, F Geoghegan, M Murray; S Morrissey, G Ensor; J O'Regan, P Flood, P Kilkenny, E Tuite, N Morris, R Lafan, P Dillon, K McLaughlin. Replacement: S Quaid for Tuite (48 mins).

CBS: K Young; J Lynn, B O'Connor, O O'Malley, N Walsh; M Tuthill, R Murphy; S Fay, M Cooney, K Doyle, B Kearney, R Boucher, E Healy, D Murphy, J Collins. Replacement: P Cogavin for Collins (2 mins).

Referee: P Kennedy (Leinster).