The Italians ran in just three tries against the amateurs, centre Andrea Masi scoring one in each half and flanker Mauro Bergamasco adding the other.

David Bortolussi kicked four penalties and two conversions but the Azzurri were sloppy and directionless, especially in the second half, and did not even claim a bonus point.

Portugal delighted a Parisian crowd of more than 45,000 with a try of their own in the first half, through lock David Penalva, and they battled gamely in only their third World Cup match.

Masis fourth-minute try came after Italy had started like a train.

The forwards laid the platform with phase after phase of possession, before the ball was fired out by fly-half Roland de Marigny to Masi, who scorched through a midfield gap to ground under the posts. Bortolussi converted.

A seventh minute yellow card to captain Marco Bortolami, for punching, momentarily took the wind out of the Italians sails.

But they still held the whip hand and the lead was added to by Bortolussi penalties in the 17th minute and 29th minutes.

Italian errors soon surfaced, though, and after camping themselves in the Portugal half, the Azzurri were hit with a sucker-punch in the 33rd minute.

In Portugals first meaningful attack, Duarte Pinto made deep inroads into the heart of the Italian defence, before the ball was recycled out to the right wing where Penalva was on hand to receive Diogo Gamas clever pass and dive over.

Pinto missed the conversion, and Bortolussi booted a late penalty to stretch Italys lead to just 16-5 by the interval.

The Italians were simply dreadful in the second half.

The rising error count would have been alarming for coach Pierre Berbizier, and Portugal were by no means blown away.

Indeed, their line-out functioned well and some of their rare forays into Italian territory brought rounds of applause from the Parc des Princes public.

Italy were resorting to Bortolussi penalties to keep the Portuguese at arms length, and he added his fourth in the 63rd minute.

They grabbed their second try, in the 73rd minute, when Bergamasco plundered over following a 10-yard rolling maul while Masi added his second after running onto de Marignys chip over the defence.

But it did not stop Portugal celebrating at the final whistle.