World champions USA marched to an imperious 8-0 win over Costa Rica in Pittsburgh on Sunday in their first match since winning the FIFA Women’s World Cup™ in Vancouver last month.

Christen Press scored a treble, and Heather O’Reilly bagged two, while Meghan Klingenberg, Julie Johnston and Whitney Engen were also on the scoresheet.

The 44,028 attendance set a record for the largest crowd for a stand-alone women’s international in the United States.

O’Reilly opened the scoring in just the fourth minute, while Press (2) and Johnston ensured the result was not in doubt by the time the team’s departed the field for half-time.

Perhaps the biggest roar under a warm summer sun at Heinz Field was reserved for Klingenberg's goal, with the fullback profiting from Tobin Heath’s assist, before a wild celebration with the entire USA bench.

Costa Rica, who performed with distinction on their Women’s World Cup debut at Canada 2015, will tackle USA again on Wednesday in Chattanooga before a sold out crowd of over 20,000 at Finlay Stadium.

USA will play two more home matches next month against Women’s World Cup quarter-finalists Australia.