Sydney FC just about kept alive their AFC Champions League campaign with a 2-2 away draw to Chinese champions Shanghai SIPG on Tuesday.
The Sky Blues led 1-0 at half-time, but trailed 2-1 before Adam Le Fondre netted a 62nd-minute equaliser.
Sydney remain bottom of the four-team group having drawn three of their four games and losing the other one
They are only two points behind second-placed SIPG, but need to win at group leaders Ulsan Hyundai in South Korea in two weeks to remain in contention..
Sydney FC have tightened their grip on second spot in the A-League and ended Perth's unbeaten away record with a 1-0 home win at Jubilee Oval.
Adam Le Fondre's 37th-minute goal decided the cagey contest and put the Sky Blues five points ahead of third-placed Melbourne Victory.
Sydney will clinch second with a round to spare if defending champions Victory don't win at Adelaide on Friday.
Perth coach Tony Popovic made six changes to his starting side following last week's Premiers Plate clinching win.
Retiring Sydney FC captain Alex Brosque has labelled the Sky Blues' last two A-League regular season games as "must-win" matches, as they try to earn a precious rest in a hectic month.
Second-placed Sydney, who host Premiers Plate winners Perth on Thursday, hold a two-point advantage over Melbourne Victory.
Both Sydney and the Victory have to play three AFC Champions League games through May, when the A-League finals series is held, with Steve Corica's team facing two overseas trips.