Who won U.S. Open 2018?
The winner of the U.S. Open in 2018 was Novak Djokovic who defeated Juan Martin del Potro in a hard-fought match. Novak Djokovic hails from Serbian and had an ATP ranking of 1 at the time of the tournament. On the other hand, Juan Martin del Potro had an ATP ranking of 5 during the tournament.