Megan Rapinoe scored twice and the United States overcame early defensive shakiness to beat Australia 3-1 Monday night in the Americans' opener at the Women's World Cup.
Christen Press also scored for the second-ranked U.S., which is seeking its third World Cup title and first since 1999.
Lisa De Vanna tied the score midway through the first half, beating controversial American goalkeeper Hope Solo.
U.S. star forward Alex Morgan, sidelined by a bone bruise in her left knee, entered in the 79th minute in her first game action with April 11 with her Portland club.
Rapinoe scored in the 12th minute for the Americans, Press put the U.S. ahead for good in the 61st, and Rapinoe added her 31st international goal in the 78th, the first two-goal game at the World Cup for the Americans since Abby Wambach against Norway in 2007.
The U.S., which won the title in 1991 and '99, improved to 5-0-2 in World Cup openers.