Lydia Ko takes lead at U.S. Women's Open

World No. 1 Lydia Ko birdied the 18th hole to cap a two-under-par 70 in the third round Saturday that put her in the lead of the U.S. Women's Open at San Martin, Calif., bolstering her chance for her third major title in less than a year. 

The 19-year-old Ko became the youngest woman to win a major...