Frank Farina admits Sydney FC were schooled by Brisbane Roar Kwame Yeboah of the Roar and Nikola Petkovic of Sydney FC compete for the ball. Sydney FC boss Frank Farina admits his side "were taught a football lesson" by Brisbane Roar as the title favourites inflicted a 5-2 hammering at Allianz Stadium. In one of the most lop-sided matches of the season, the Roar could have scored even more and left the Sky Blues for dead with their quick passing and intelligent movement. There's no hiding from the fact they were the better team. They were more mobile. They moved the ball better and we couldn't cope with it. Farina, who coached the Roar to within touching distance of their first grand final in 2009, admitted Sydney were nowhere near their rivals. "We started ok and got the goal but at the end of the day, we were shown a football lesson," he said after the match. While Brisbane looked to be playing at warp speed as soon as they received the ball, Farina said his side was relatively sluggish. "We were slow in getting close to players and they could pick us off," he said. If someone wasn't picking up [an opponent], they just outnumbered us. You can't take anything away from Brisbane - we just weren't at the races today on all fronts. We weren't pushing up quickly enough whereas they had genuine movement and mobility, which is their strength. If you don't match that, you'll struggle. While Alessandro Del Piero scored one of Sydney's two goals with a top-draw free kick, he once again hobbled off at half-time with a recurrence of his back injury. "He said he was fine [this week] and trained through while we were away," he said. It looks a similar thing. It's coming from his back, it's tightened up and it was too hard for him to go back out there. It was the oldest line-up ever in Sydney FC's history and the Roar made them looked every bit of their 30.56 years - rubbed in by the sight of a hat-trick to ex-Sydney junior Dimi Petratos. "We wanted to shake things up a bit because we didn't play that well last week [losing 2-0 to Newcastle] and he was fully deserving of his opportunity," said Roar coach Mike Mulvey. He's got a fantastic attitude, great character and I knew that when we released him onto the field, he's got so much energy and quality that it didn't matter that he was playing against Sydney FC. Mulvey revealed that Petratos grabbed the ball before Ivan Franjic, originally meant to be on penalty duties, could get to the spot kicks. Petratos was unlucky to be denied more goals in open play by some fine work from Sydney goalkeeper Vedran Janjetovic. While Mulvey rebuked his players for conceding late, saying it showed the table toppers still had room for improvement, he was otherwise rapt with what unfolded. "I thought it was a very dominant display," he said. We know that was a poor goal to concede and I think what that tells you is what we're about. We're serious.