Siemsen scored in each half - her third double in five matches - as the reigning champions outlasted the Jets in Newcastle on Sunday.

The 2-0 victory keeps the Sky Blues in second, a point shy of Melbourne City after five rounds.

Siemsen headed home the opener from close range on the half-hour mark, having profited from an inch-perfect Angelique Hristodoulou cross.

The visitors created a catalogue of half-chances with Siemsen and Caitlin Foord spurning good openings.

But it took an error from goalkeeper Claire Coelho for Sydney to double their lead with Siemsen firing a shot home following a wayward pass from the Jets' No.1.

The 20-year-old now has six goals, two ahead of Western Sydney Wanderers' Kristen Hamilton, with the Wanderers out of action over the weekend.

There was more good news for Sydney FC with Matildas' defender Alanna Kennedy making her first starting appearance of the season, while American import Veronica Latsko finally debuted as a substitute following injury.

Sydney will be looking to defend a near-perfect derby record when they tackle the third-placed Wanderers next Friday.

A Hayley Raso double lifted Brisbane Roar past Adelaide United on Saturday for a second win on the trot, putting the two-time champions' dismal start to the season firmly behind them.

The Matildas winger netted the winner with seven minutes remaining as the Roar edged the winless Adelaide by the odd goal in five.

Veteran defender Kim Carroll ended a six-year goal drought to rescue a point in the final minute for Perth Glory against the visiting Canberra United in stifling heat on Friday.

United missed a catalogue of chances to seal the win having gone ahead through Simone Charley, although the point keeps them in fourth place.

Melbourne City opened the round on Thursday with three crucial points thanks to a last-gasp derby win over Melbourne Victory.

Japanese midfielder Yukari Kinga fired home from close range as the Victory's brave defensive effort was finally thwarted, allowing City to escape with a third successive one-goal win.