U.S. Open: No. 1 Zverev enters semifinals with ease; to face Khachanov

No. 1 Zverev reaches US Open semifinals and will face Khachanov after Blockx's injuries

Alexander Zverev’s rocky road to start the U.S. Open turned into smooth sailing to the semifinals. The No. 1 seed beat Botic van de Zandschulp 6-2, 7-5, 6-1 on Wednesday night, putting him into the final four of every…