Brisbane have already put nine goals past Sydney this season but Roar coach Mike Mulvey is calling on his charges to be even more ruthless on Saturday.

Brisbane have destroyed Sydney in the sides previous two encounters this season and with Roar coach Mike Mulvey calling on his charges to be even more ruthless on Saturday the Sky Blues should be quaking in their boots.

Sydney got thumped 5-2 in their round 12 clash with the Roar in December having suffered a 4-0 drubbing away to them 10 weeks earlier.

Brisbane’s most potent attacking weapon Besart Berisha wasn’t even responsible for any of the nine goals, having left the field injured in the first clash and being sidelined for the second with a hip complaint.

The Albanian striker was back to his goal-scoring best last week, netting a brace to ensure his side’s 2-1 win over Adelaide and Mulvey expects the barrage to continue at Allianz Stadium on Saturday.

“I’m looking for us to be a bit more ruthless,” he said.

“We had the opportunity last week to score a couple more goals in the game and we didn’t.

“So I’m looking for that ruthlessness over the next few weeks.

“Bes returned to the goal scoring charts last week and I’m expecting him to score a few goals between now and the end of the season.

“So Sydney will have their hands full trying to contain him.”

Mulvey isn’t expecting it to all go the Roar’s way however, with the Sky Blues high on confidence coming off the back of a momentous 3-1 derby win over Western Sydney.

The addition of centre-back Sasa Ognenovski has also vastly improved Sydney’s leaky defence.

“We’ve got a good record against them this season but I’m pretty wary of them at the moment because they’ve tightened up a little bit at the back, plus they’ve got the bit between their teeth,” he said.

“They’ve won three of their last four, Frank’s turned them around and they’re going well.”

Sydney’s victory last week lifted them to fourth on the ladder while frontrunners Roar extended their lead at the top to 10 points.

The Roar can wrap up the Premiers’ Plate with a win on Saturday, should other results go their way.

But with only five games remaining before the finals the pressure is squarely on Sydney, who are desperate to continue their late charge.

Farina is hoping another high-stakes game will lift his side.

“A win like that in those circumstances and in that atmosphere is always moral boosting and confidence boosting,” he said.

“It helps but I don’t think it prepares you for when you cross the white line.

“For them there’s no real pressure, they’re sitting comfortably on top, but for us that pressure seems to bring the best out in us.”

Brisbane head to Sydney without Socceroo Ivan Franjic, who suffered an ankle injury last weekend.