DEFENDER / Age: 33 Caps: 116
An injury scratch from both the 2003 and '07 World Cups, she earned her spot this year after proving her fitness (over a nagging hamstring) in the June 5 match against Mexico. The wife of Rams quarterback A.J. Feeley, Mitts will be the oldest U.S. woman ever to make her World Cup debut.
MIDFIELDER / Age: 25 Caps: 31
With her twin sister, Rachael, Rapinoe helped Portland win an NCAA title as a freshman in 2005, when she was a first-team All-America. Sidelined from U.S. duty for all of '07 and '08 with ACL injuries, she has since emerged as a scoring threat from midfield, starting eight of 10 games in 2011. Twitter@mPinoe
DEFENDER / Age: 26 Caps: 18
The two-time Penn State All-America has played most of her club soccer in Germany, winning the 2011 German Cup with Frankfurt. After debuting for the U.S. in '08, Krieger was not called up in '09, but coach Pia Sundhage says she has become more aggressive and technically sound over the last year.