The Matildas are currently in Seattle and will take on world No.1 USA at noon (AEST) to commence the 2017 Tournament of Nations today. Australia will then take on Japan in San Diego and then Brazil in Carson.

Alleway said the opportunity to test themselves against quality opposition is needed, with a spread of players over the globe of different ages selected by Stajcic.

Among the experienced Clare Polkinghorne and Lisa De Vanna are youngsters Princess Ibini, Ellie Carpenter and Alex Chidiac.

The Melbourne City defender joked about it being “the out with the old, and in with the new” but emphasised the importance of youth development.

“It’s for the future of the game, you need to be exposing these young players to a higher level,” Alleway told FourFourTwo.

“I guess it’s all good to test them and see how they cope under different situations. Whilst you know you have reliable senior players, you need those fresh faces to push those senior players as well.

“We’ve been thrown into the deep end. All three of these opponents, if you’re not at the top of your game, you’re not switched on for 90 minutes can hurt you anytime.

“That’ll be the real test I think, making sure everyone switched on for the whole game.”

Alleway is currently unattached during the W-League offseason but is still training with the most recent American club she played with - Orlando Pride in the National Women’s Soccer League (NWSL).

The 27-year-old is looking for other clubs in the NWSL but is unable to break in due to all foreigner roles filled.

The defender however is still backing her experience to help her against the US in the Tournament of Nations should she be required.

She will come against Orlando teammates - household name Alex Morgan and Ali Krieger - who both have vast experience in the national team.

“That familiarity helps you know what to expect from different players, you’re opened to more experiences and then there’s no fear of the unknown,” she said.

“You also know how different people perform so you feel more prepared for a game.”