The USA will then travel to Birmingham, Ala., to face Australia on May 3 at Legion Field and finish the tour on May 10 against Canada at RFK Stadium in Washington, D.C.
Coach Pia Sundhage brought 25 players on the tour. Among the players who arrived in Cary on Monday night were Aly Wagner, who joined the national team for the first time in 2008 after recovering from double-hernia surgery in late January.
All 25 players will travel and train in the three cities, but Sundhage will suit up only 18 players for each match.
All the players expected to compete for spots on the 18-player Olympic roster are available with the exception of midfielder Angie Woznuk, who is still rehabbing a back injury.
U.S. WOMEN'S ROSTER:
GOALKEEPERS: Nicole Barnhart (Gilbertsville, Pa.), Briana Scurry (Dayton, Minn.), Hope Solo (Richland, Wash.);
DEFENDERS: Rachel Buehler (Del Mar, Calif.), Lori Chalupny (St. Louis, Mo.), Stephanie Cox (Elk Grove, Calif.), Keeley Dowling (Carmel, Ind.), Kate Markgraf (Bloomfield Hills, Mich.), Heather Mitts (Cincinnati, Ohio), Christie Rampone (Point Pleasant, N.J.), India Trotter (Plantation, Fla.), Cat Whitehill (Birmingham, Ala.);
MIDFIELDERS: Shannon Boxx (Redondo Beach, Calif.), Tobin Heath (Basking Ridge, N.J.), Angela Hucles (Virginia Beach, Va.), Carli Lloyd (Delran, N.J.), Leslie Osborne (Brookfield, Wis.), Lindsay Tarpley (Kalamazoo, Mich.), Aly Wagner (San Jose, Calif.), Kacey White (Arlington, Texas);
FORWARDS: Lauren Cheney (Indianapolis, Ind.), Natasha Kai (Kahuku, Hawaii), Heather O'Reilly (East Brunswick, N.J.), Amy Rodriguez (Lake Forest, Calif.), Abby Wambach (Rochester, N.Y.).