Miami fourth round
(1) Novak Djokovic vs. Alexandr Dolgopolov: Djokovic has been dominant at times this tournament but has also endured mental walkabouts. He should learn from his previous two matches and turn in a no-nonsense performance against an opponent he won’t take lightly. Djokovic in 2.
(22) John Isner vs. (5) Milos Raonic: Isner is playing at home in the United States, but he would rather contest this one during the day rather than after 9:00 at night. Strong play has come out of nowhere for Isner, but it’s the norm for Raonic. Raonic in 3.
(28) Adrian Mannarino vs. Dominic Thiem: The most surprising fourth-round clash is the first ever between Mannarino and Thiem. Mannarino has been on fire the whole season, whereas Thiem is just now finding his form. Look for the difference to be the Frenchman’s early ball-striking and ability to take time away from Thiem. Mannarino in 3.
(15) Kevin Anderson vs. (3) Andy Murray: Murray feels right at home in Miami (because he, basically) and he has been in cruise-control mode so far. The No. 3 seed, who generally has his way with big hitters, is 3-1 against Anderson. Murray in 2.
(8) Tomas Berdych vs. (17) Gael Monfils: Aside from a five-set loss at the 2013 French Open, Berdych has had little trouble with Monfils (4-1 lifetime). The Czech has a new lease on life after saving four match points against Bernard Tomic on Sunday. Berdych in 2.
Juan Monaco vs. (29) Fernando Verdasco: Since starting the season 0-4, Monaco is 11-3 in his last 14 matches. He effectively has home-court advantage as an Argentine, while Verdasco has the tough task of building on a massive win over Rafael Nadal. Monaco in 2.