5 teams when you add Western United, who are also right in the hunt.
3 six pointer games in a week for the Nix - Snakes, WSW & Glory.
A win against WU, should see the season still alive for Perth at Eden Park, and a reasonable crowd if the weather is okay, even if lose midweek in Parramatta.
Really it's 6th spot they are going for, anything above that a bonus.
https://us.soccerway.com/national/australia/a-league/20202021/regular-season/r59845/