Patrick McEnroe thinks Novak Djokovic will "need some help" to make it all the way at the US Open, and also warns that the "the time is running out" for the 38-year-old to add another Grand Slam glory to his collection before he calls it a career.

Tennis legend Novak Djokovic didn't hold back going into the U.S. Open. Djokovic, who plays on Aug. 24, spoke at a pre-U.S. Open media event about his priorities, family, things that give him joy, and the comments made by top players who have raised scheduling concerns.