Melbourne City solidified second place in the A-League after a 2-0 victory over Newcastle Jets, while Brisbane Roar beat Wellington Phoenix.
Goals from Adam Le Fondre and Kosta Barbarouses were decisive as Sydney FC extended their lead at top of the A-League.
Sven-Goran Eriksson, 71, is in the frame to replace Ernie Merrick at the Australian club.
After two wins from 11 A-League games, the Newcastle Jets sacked head coach Ernie Merrick.
Newcastle Jets, bottom of the A-League, slumped to a 4-0 defeat away to Melbourne Jets on Sunday.
A 3-1 win over Western United extended Wellington Phoenix's unbeaten run in the A-League to seven matches and moved them into the top six.
Perth Glory and Melbourne Victory celebrated A-League wins on Saturday, but Sydney FC's streak came to a halt against Wellington Phoenix.
Jamie Maclaren struck his 10th goal for the season and two Uruguayans starred in Melbourne City's big win at Newcastle Jets.
Two goals from veteran striker Besart Berisha helped Western United claim a 3-1 victory over Melbourne Victory in their A-League derby.
Newcastle Jets outlasted Western Sydney Wanderers, while Brisbane Roar were too good for Central Coast Mariners in the A-League.