Decorated goalkeeper Michael Theo says the Brisbane Roar will attack the Wanderers from the outset in Sunday’s A-League grand final.

Fortune favoured them in their semi-final and the Brisbane Roar will again be “brave” in Sunday’s A-League decider against Western Sydney Wanderers.

Roar goalkeeper Michael Theo, the competition’s most successful player, has declared the premiers will attack the Wanderers from the outset at Suncorp Stadium to claim a third championship in four seasons.

Theo, aiming to extend his personal record to five titles in eight years, said there was no chance Brisbane would take a cautious approach to the big occasion.

“I don’t see us going into our shell because it’s a grand final,” he said.

“Especially at home … we stand taller.

“Grand finals are cagey affairs; neither team wants to make a mistake so they normally stay 0-0 until late on.

“But we’re going to be brave and play the football we normally play.

“If we concede a goal, so be it, we know we can score in the 93rd or 94th minute, and if it goes to extra-time even better.

“We know we’re fit enough and have shown that all year.”

After 15 days rest leading into Sunday’s controversial 1-0 semi-final win over Melbourne Victory, Brisbane certainly have the advantage of being fresher than the Wanderers, who have juggled Asian Champions League commitments in the past two months.

The Roar did show signs of rust against the Victory, who were left seething after loud claims of a stoppage-time penalty were waved away by referee Stebre Dilovski.

Theo, who won his first two championships with the Victory, conceded his old side may have been unlucky not to receive a spot kick after Matt Smith brought down Mark Milligan in the box.

“You see them given and sometimes they’re not and fortunate for us it wasn’t given,” he said. “But you look at the 90 minutes, I think it would have been a massive injustice if we hadn’t got to host the grand final.

“And we’ve been the most consistent team all season.”

Coach Mike Mulvey said the two-week break had made an impact but he predicted the premiers would be “sharper next week, and better for it”.

Right winger Dimitri Petratos is the only Roar injury concern after being replaced in the second half with a badly swollen ankle.

But the club’s medical staff are confident the much-improved Sydney product will be fit in time to play.