CoCo Vandeweghe 3rd American woman into US Open semifinals

New York • CoCo Vandeweghe made it three Americans into the U.S. Open women’s semifinals, beating top-seeded Karolina Pliskova 7-6 (4), 6-3 on Wednesday.The 20th-seeded Vandeweghe matched her best result in a Grand Slam tournament, having also reached the semifinals of the Australian Open in January before falling to Venus Williams.Williams is also into the semifinals in Flushing Meadows along with Sloane Stephens, and No. 15 Madison Keys had a chance to make it an all-Ameri