Djokovic vs Zverev: prediction for the US Open match

Djokovicdoesn't look entirely convincing at the current US Open. It is rare to see the Serbian tennis player lose a set, but he already lost four at this tournament. Djokovic played four sets against Holger Rune (6-1, 6-7, 6-2, 6-1), Kei Nishikori (6-7, 6-3, 6-3, 6-2), Jenson Brooksby (1-6, 6-3, 6-2, 6-2), and Matteo Berrettini (5-7, 6-2, 6-2, 6-2). His only three-set win was over Tallon Griekspoor (6-2, 6-3, 6-2).

This is the 12th US Open semifinal in Djokovic's career. He has won this tournament three times. 

Zverev is phenomenal this year, especially since he won the gold medal at the Olympics. He is very confident and is rightfully considered one of the main contenders for the trophy. So far, Zverev's most difficult match at the US Open was against Jack Sock.

The German tennis player lost the first set but managed to pull himself together and won the following two sets. Then Sock got injured and withdrew from the competition. In his other matches of this US Open, Zverev outplayed Sam Querrey (6-4, 7-5, 6-2), Albert Ramos Vinolas (6-1, 6-0, 6-3), Jannik Sinner (6-4, 6-4, 7-6), and Lloyd Harris (7-6, 6-3, 6-4).