Shane Smeltz scored a late winner as Sydney FC beat Western Sydney Wanderers in Saturday's A-League derby to move within a point of the top of the table.

The visitors came into the match unbeaten in four and they took the lead midway through the first half when Jacques Faty nodded home from close range following a corner.

They maintained their advantage by half time, but Western Sydney were level in the 58th minute through Dario Vidosic's curled finish.

Sydney keeper Vedran Janjetovic stopped the home side going in front with a key save in the 78th minute and the visitors then scored the winner in the final minute of normal time as Smeltz slammed home.

Western Sydney, who have now lost back-to-back games after going 11 unbeaten, miss the chance to go top and are joined on 27 points by Sydney, with Brisbane Roar holding first place.