Central Coast Mariners held on to their four-point lead at the top of Australia's A-League with a scoreless draw against Newcastle Jets on Sunday.

The Mariners had led the competition by five points before Queensland Roar claimed a 0-0 draw with Sydney FC in Sunday's late match.

Plenty of opportunities were created in the Jets-Mariners game, but neither side could break the deadlock, with former Brazil international striker and European Golden Boot winner Mario Jardel yet again failing to find the net for the Jets.

Sydney FC and Queensland Roar laboured to a drab draw watched by the world's most famous footballer David Beckham ahead of LA Galaxy's match here on Tuesday against Sydney.

The match almost came alive with eight minutes to go when Queensland defender Andrew Packer was sent off for a second yellow card, but the hosts couldn't capitalise on the man advantage.

Champions Melbourne Victory had skipper Kevin Muscat sent off after just 35 minutes for committing two fouls in the space of 60 seconds, leaving his 10 teammates to cling on for a 1-1 draw with Wellington Phoenix.

Muscat became the fourth Victory player to be given his marching orders this season after a bad challenge on Tim Brown.

But for the second consecutive week, the Phoenix couldn't put away 10 men, and they had to grab a draw the hard way after fighting back from a goal down.

A super strike by Vince Lia in the 58th minute secured the draw for the Phoenix after Danny Allsopp had put Victory in front just before halftime.

Perth Glory veteran Jamie Harnwell scored with a header from a free kick to force a 1-1 draw with Adelaide United at Adelaide's Hindmarsh Stadium.

The 30-year-old defender-cum-striker netted his fifth goal of the season in the 69th minute after Adelaide defender Richie Alagich had fired the home side ahead in the 40th minute.

The second draw of the season between the two teams kept Adelaide in third spot in the A-League, while Perth stay at the bottom.