[U.S WOMEN] Christine Nairn, a freshman redshirt at Penn State, has been called into the U.S. women's national team's 17-day training camp at U.S. Soccer's National Training Center at The Home  Depot Center in Carson, Calif.

Nairn was the youngest member of the U.S. team that won the 2008 U-20 Women's World Cup championship and will be the youngest player in national team camp.

She arrived at Penn State this semester after delaying her enrollment last fall to focus on preparations for the U-20 Women's World Cup.

Nairn, who is age-eligible for the 2010 U-20 Women's World Cup, and former Illinois forward Ella Masar were late additions to the training camp in place of Jill Oakes and Lauren Cheney.

The camp, which began Tuesday, will prepare the Americans for the annual Algarve Cup that will be held March 4-11 in southern Portugal.

U.S. Roster:
GOALKEEPERS: Nicole Barnhart (FC Gold Pride), Hope Solo (St. Louis Athletica)
DEFENDERS: Rachel Buehler (FC Gold Pride), Lori Chalupny (St. Louis Athletica), Stephanie Cox (Los Angeles Sol), Marian Dalmy (Chicago Red Stars), Kendall Fletcher (Los Angeles Sol), Heather Mitts (Boston Breakers), Christie Rampone (Sky Blue FC)
MIDFIELDERS: Shannon Boxx (Los Angeles Sol), Tina DiMartino (FC Gold Pride), Tobin Heath (Univ. of North Carolina), Carli Lloyd (Chicago Red Stars), Christine Nairn (Penn State Univ.), Heather O'Reilly (Sky Blue FC), Lindsay Tarpley (Chicago Red Stars), Kacey White (Sky Blue FC), Angie Woznuk (St. Louis Athletica)
FORWARDS: Tina Ellertson (St. Louis Athletica), Angela Hucles (Boston Breakers), Natasha Kai (Sky Blue FC), Ella Masar (Chicago Red Stars), Megan Rapinoe (Chicago Red Stars), Amy Rodriguez (Boston Breakers), Abby Wambach (Washington Freedom)