Alex Morgan scored five goals and the United States beat overmatched Thailand 13-0 in its first game at the FIFA Women's World Cup.
The USA scored 10 goals in the second half at Reims, France.
Lindsey Horan of the Portland Thorns scored the third goal of the first half, converting a rebound chance on a play that started with a free kick by Thorns teammate Tobin Heath.
Horan played the whole match in midfield. Heath played the first 57 minutes on the right wing.
The 13-0 score was a World Cup record margin of victory for men or women, bettering an 11-0 win for Germany over Argentina at the 2007 Women's World Cup.
Morgan matched the team record of five goals scored by Michelle Akers in a game at the 1991 World Cup.
Rose Lavelle and Sam Mewis each scored two goals. Former Portland Pilots star Megan Rapinoe scored once, as did Mallory Pugh and Carli Lloyd.
Next for the United States is a 9 a.m. PT Sunday match against Chile. The first test for the Americans is expected to be their final group-stage match on June 20 against Sweden.
There are three games on Wednesday, highlighted by host France against Norway at noon PT.
Oregon has hired Mark Wasikowski from Purdue to replace George Horton, who left with one year on his contact.
Wasikowski was an assistant at UO from 2012-16, under Horton.
He was coach of the Boilermarkers the past three seasons, going 87-82 after 43-115 the previous three years.
He also was the starting third baseman and captain of the 1992 Pepperdine national championship team.