They wrap up their national league campaign against Waterside Karori at Logan Park Turf tomorrow.
Southern United had the wood over Waterside Karori last season when they banked a 3-0 win at home.
But Waterside Karori have been excellent this season and will be no easy task.
They have already booked their spot in the national league final and will play Auckland United next weekend.
However, Southern United will want to add to their two wins this season.
There will be no love lost in a family rivalry on the field either.
Southern United captain Rose Morton will come up against sister Sarah — who also previously played for Southern United — and neither will give an inch.
Southern lost 2-1 to Auckland United last weekend, but Shontelle Smith scored a screamer as she so often does.
Waterside Karori sit second on the table, behind defending champions Auckland United, and are four points clear of Eastern Suburbs.
They are yet to drop a game this season, recording five wins and three draws and are the only side to force Auckland United into a 1-1 draw this season.
Waterside Karori, home to midfielder Kendall Pollock who is league’s top scorer with seven goals, come in off the back of a 3-1 win against the West Coast Rangers during which Waterside Karori scored three goals in the opening 11 minutes.
In other games today, Auckland United host Phoenix Reserves and Canterbury United Pride play Western Springs.
West Coast Rangers are home to Eastern Suburbs and Wellington United play Central in a cross-town derby tomorrow.