Middlesbrough 0 Portsmouth 4:  Former Arsenal striker Kanu helped himself to a double as Portsmouth maintained their unbeaten start to the season with a crushing victory over Gareth Southgate's Middlesbrough.

The Nigerian struck after seven and 57 minutes either side of Benjani Mwaruwari's 50th-minute header to make Boro pay for a substandard display.

And there was worse to come for the home side in injury time when substitute Svetoslav Todorov lifted Sean Davis' pass over Mark Schwarzer to complete the rout.

In the FAI Carlsberg Cup, Longford Town heaped more misery on struggling Waterford United with a 1-0 victory in the replay at Flancare Park.

Just as the game looked set for extra-time, Stephen Paisley popped up with five minutes remaining to secure Longford's ticket to the quarter-finals.