NEW YORK (AP) — Novak Djokovic has moved one victory away from completing the first calendar-year Grand Slam in men’s tennis since 1969 by beating Alexander Zverev 4-6, 6-2, 6-4, 4-6, 6-2 to reach the U.S. Open final. Djokovic is 27-0 in major tournaments this season. That includes trophies at the Australian Open, the French Open and Wimbledon. The No. 1-ranked Djokovic will add the fourth leg of the Grand Slam if he beats No. 2 Daniil Medvedev in Sunday’s final. That would also give Djokovic the 21st major singles championship of his career and break the men’s record he shares with Roger Federer and Rafael Nadal.