Portmarnock's lack of match practice told as impressive Marian College progressed through to the next round of the Junior Cup at the Belvedere grounds.

David Kearney, who represented Irish Schools at `A' level, inflicted maximum damage in the number eight jersey. Portmarnock improved in the second half but, 22-3 down at the break, had too much to do.

Scorers: Marian 39: D Kearney 3 tries; C Connolly 2 tries, con; G Glennon 2 pens, 3 cons; Portmarnock 3: B Kettle penalty.

Marian College: L Fox; M Whelan, C Berney, C Connolly, D O'Neill; G Glennon, D Grimes; S Murray, T Fitzpatrick, D Murray, B O'Shea, C Byrne, G Mc Donald, M Fitzpatrick, D Kearney. Replacements: C Casey for Whelan, N Goad for O'Neill, L Heapes for Fitzpatrick.

Portmarnock: M Chester; D Griffin, P Pepper, W Owens, J Bennett; A Howe, P McCrory (capt); P Grey, P A More, A Flood, D O'Brien, L Sex, P Murphy, D Duffy, B Kettle. Replace- ments: C Gallagher for Flood, B Reed for Gray, S Canavan for McCrory, G Murphy for Bennett.

Referee: F Close (ARLB).