Duke star Amanda Blumenherst advanced to U.S. Women's Amateur semifinals Friday, beating Spain's Carlota Ciganda 4 and 3 at Eugene Country Club. Blumenherst, the three-time national college player of the year, will face 15-year-old Erynn Lee of Silverdale, Wash., a 4-and-3 winner over Chelsea Stelzmiller of Placerville, Calif. Azahara Munoz, the NCAA champion from Arizona State, and Belen Mozo also advanced.