Fan to Player: Alyssa Thompson joins forces with US women's football team

In a surprising turn of events, 18-year-old Alyssa Thompson, who had been a fan of the United States' women's football team, is now helping them prepare for a rematch against the Netherlands in the Women's World Cup.

Having graduated from high school recently, Alyssa never anticipated playing in such a prestigious tournament at such a young age. This unexpected opportunity has brought back memories of her time as a passionate national team supporter.

"I just remember how intense it was and how back and forth it was, and it was a tough game and I was really nervous for the team," she told reporters on Monday.

"At that moment, I wasn't really thinking about, 'Oh, the next one, I'm going to be at,' because it felt like so far away. But being here now is crazy to me because I didn't think about it at the moment."

She became the second-youngest ever to take the pitch for the United States in a Women's World Cup when she was subbed in during the 75th minute of their 3-0 victory over Vietnam on Saturday.

The forward was scarcely able to contain her joy at the match as she completed her stunning transformation from a youth football competitor to a World Cup contender in a matter of months.

"I was pretty nervous just to play my first World Cup game. But once I was on the sideline, I was kind of overcome with happiness and excitement, just because I was going into my first World Cup, and I wasn't feeling any other emotion," she said.

The ninth-ranked Netherlands, who beat Portugal 1-0 in their Sunday opener, is widely expected to be the Americans' toughest Group E opponent.

Thompson's teammate, defender Naomi Girma, said they are relying on the steady hand of their veteran corps, including fourth-timers Megan Rapinoe and Alex Morgan, to help them mentally prepare.

"They've just been telling us to enjoy the moment and soak it in, and I think in that first game that was really big - just staying calm and just knowing that it's a normal game and trusting ourselves to go out and get the job done," said Girma.

The United States play the Netherlands in Wellington on Thursday, before closing out their group against Portugal next week.