No. 14 Madison Keys vs. No. 30 Carla Suárez Navarro
Ashe Stadium, 7 p.m.
Keys, last year’s finalist, has dropped only one set so far in the tournament. She plays the crafty veteran Navarro who just had the best possible warm-up for taking on Keys, defeating Maria Sharapova. Navarro relies on her variety and placement of shots rather than power. Keys has a lot more power than variety, although she has certainly improved in that area over the last year. The crowd will be on her side, but Navarro will not be an easy out.
No. 6 Novak Djokovic vs. John Millman
Ashe Stadium, second night match
Millman has been the surprise of the tournament. After training with Roger Federer over the summer, he knocked him out in a match in which Federer looked haggard and worn out by the heat. While Djokovic has also shown some signs of fatigue in the heat-wave, his famed conditioning has meant he has not been affected nearly as much as many of the other players. If Millman can keep up with him, maybe we can…