2010 LPGA Tour Championship: Round 2

1 of 5 Scott Halleran/Getty Images
made four birdies on the back nine for a three-shot lead heading into the weekend.
2 of 5 Sam Greenwood/Getty Images
is tied for fifth after a 3-under 69.
3 of 5 Sam Greenwood/Getty Images
bogeyed 17 and 18 for a 71.
4 of 5 Sam Greenwood/Getty Images
made only one birdie in her round of 77.
5 of 5 Scott Halleran/Getty Images
moved into a tie for second after a 4-under 68.