Prediction for the rest of the tournament:
Dimitrov will fold against Federer and lose in less than 75 minutes.
Medvedev will beat Wawrinka in five sets, just under 5 hours.
Nadal will beat Cilic in four.
Schwartzman will beat Zverev, then Nadal will beat him in five.
Medvedev will walkover from his semi against Federer citing extreme fatigue. Nadal will need another five to deal with Rublev.
Nadal will walkover from the final citing exhaustion. Fedal wars will reach unprecedented levels. Kyrgios will tweet something. Instead of the final, they play an exo featuring Federer and Gauff. Federer fails to lose a game, is booed for being so insensitive and finally reveals his true colors, calling American fans "garbage" while he does a Nazi salute.