Lexi Thompson lines up her putt on the 17th green during second round play in the Navistar LPGA Classic golf tournament, Friday, Sept. 21, 2012, at the Robert Trent Jones Golf Trail in Prattville, Ala. (AP Photo/Dave Martin)

Lexi Thompson lines up her putt on the 17th green during second round play in the Navistar LPGA Classic golf tournament, Friday, Sept. 21, 2012, at the Robert Trent Jones Golf Trail in Prattville, Ala. (AP Photo/Dave Martin)