After another slow start, Novak Djokovic rolls into U.S. Open semis

For the third consecutive match at the U.S. Open, top-seeded Novak Djokovic lost his opening set Wednesday in New York.

And for the third consecutive match, the Serbian star was barely challenged thereafter.

A 5-7, 6-2, 6-2, 6-3 win over sixth-seeded Matteo Berrettini of Italy sends Djokovic to the semifinals. Djokovic is two wins away from becoming the first male player to complete a calendar-year sweep of the four Gra