Davis looking to kick off campaign
Northern Ireland captain Steven Davis is desperate to help put his side's World Cup qualification bid back on track against Portugal on Tuesday.
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The Southampton midfielder knows the odds are stacked heavily against his side, ranked 117th by FIFA to Portugal's third, but he remains hopeful.
Northern Ireland's first two matches in Group F saw them defeated 2-0 by a strongly fancied Russia and then held to a disappointing 1-1 draw in Luxembourg.
The latter result still leaves a bitter taste in Davis' mouth and he wants to use it as the inspiration for a memorable performance in Porto.
"Luxembourg was a big chance to get three points and we were massively disappointed not to, so hopefully something special can happen here and that will kick us off for the campaign," he said.
"We understand what we are up against and need to keep our shape compact and frustrate. Once we get clear possession we must try to interact and cause them problems.
"I think everyone was disappointed after Luxembourg. It was a frustrated dressing room after the game, so this gives us an opportunity to put something right."
The days of Northern Ireland upsetting the likes of Spain and England under Lawrie Sanchez may seem long ago, but Davis is among those who featured in such matches and refuses to forget.
"I think there are a number of players in the squad who have managed a few upsets and we need luck and want that if something is to come from the game," he said.
"It's not easy, but we are definitely due a good result."