Prostejov, Czech Republic, 7 August 2013 | tennis.com.au

Australia’s girls team has scored an incredible come-from-behind victory to remain undefeated at the ITF World Junior Tennis Finals in Prostejov, Czech Republic.

The team, seeded third and the highest-seeded nation in Group B, beat Italy 2-1 to move into second place in its group behind the United States, whom they will face on Wednesday for a berth in the semifinals.

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Meanwhile, the Australian boys’ team vaulted to the top of its round-robin group with an emphatic 3-0 victory over Italy.

Alex De Minaur opened the tie with a 6-1 6-2 win over Guido Marson, before Alexei Popyrin clinched victory with a 6-1 6-7(3) 6-4 decision over Nicolas Merzetti in the second singles rubber.

Australia iced a 3-0 triumph when Popyrin and Kody Pearson combined for a comfortable 6-3 6-3 win over Merzetti and Andrea Trapani in the doubles rubber.

The boys will on Wednesday face Brazil in their final round-robin match, with a win seeing them qualify for the semifinals.

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Yet for the Aussie girls, it was a far grittier struggle; the team required seven hours to subdue the Italians in the extreme heat of Prostejov.

Jaimee Fourlis battled hard against Tatiana Pieri, holding a set point in the second set before going down 6-4 7-6(2).

It looked like Australia were going to be handed a defeat when Destanee Aiava went down 6-4 5-0 in the second singles rubber against Arianna Capogrosso.

Yet Aiava staged a stunning turnaround, saving a match point before recovering to win 4-6 7-5 6-1. “This was an absolutely amazing comeback that kept the tie alive,” observed Simon Youl, Australia’s girls’ team captain.

Fourlis and Aiava then combined in the decisive doubles rubber, winning a closely-fought match over Pieri and Capogrosso 6-3 6-4.

“The day was an emotional roller coaster for all and we will even be stronger from this going into the next tie,” said Youl.

“It was a tough day in tennis and we all learned much from the experience.”