Sydney FC made it two from two under new coach John Kosmina with a 1-0 victory over the Newcastle Jets but the victory may come at a cost after an injury to marquee-signing Juninho.

Sydney FC will be sweating on the fitness of the key attacking midfielder, who was replaced at half-time after re-injuring his troublesome right shoulder, apparently in a collision with referee Matthew Breeze.

The 34-year-old has already missed three of his side's 10 games this year.

Playing in just his second A-League game, striker Michael Bridges broke the Jets' much-vaunted defence open with a stunning left-footed strike midway through the second half to claim the win for Sydney.

The Jets' league-best defence held solid in a hard fought and fast paced first half with the honours even.

Sydney got the better of possession but Newcastle created their share of opportunities, mainly on the counter-attack.

It took Sydney over twenty minutes to take a shot on goal and when they did it was an ambitious shot by former Leeds United striker Michael Bridges, whose 20m effort forced a diving save by Ante Covic.

Sydney began to build towards the end of the frenzied first half, but couldn't crack Newcastle's defence, settling mainly for long range efforts and getting only one chance for leading goal scorer Alex Brosque who shot high and wide in the 39th minute.

Jets striker Mark Bridge went within centimetres of breaking the deadlock late in the first half when his deflected shot from an acute angle went perilously close, floating across the face of the Sydney goal.

A shower during the half-time break made attacking play difficult in the second-half and chances were few, but Bridges, who had worked hard all night, set the game alight with his 69th minute strike.

He swooped on an ineffective clearance just inside the Jets penalty area and smashed a perfectly timed, first-time shot into the top-right hand corner past the helpless Covic.

Newcastle's own Brazilian marquee signing, Mario Jardel, who has struggled for playing time this season, came on in the 73rd minute and almost had an immediate impact.

He had his firm header saved by Clint Bolton and then his second effort from on the ground desperately cleared off the line by Robbie Middleby.

Adam D'Puzzo nearly stole a point for the Jets with a 88th minute effort that cracked into the near post after taking a deflection but Sydney hung on through the tense final minutes for a thoroughly deserved victory.

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