From experts:
Who wins and why?
McEnroe: Djokovic is the favorite, and rightly so, but I think it's Medvedev's time, and he's playing the kind of game that can really disrupt Djokovic. Medvedev is the closest player we have to Djokovic in the way he can defensively manipulate his opponent and change the pace. It might get into Djokovic's head. I'm not sure if it will signal the changing of the guard, but I'll take Medvedev in four really tight sets.
Gilbert: Both guys will be well-rested after routine semifinal wins, and I'm hoping that we get a five-set classic. But I've got to go with Djokovic in four sets, just based upon the fact he's 8-0 in Australian Open finals and knows how to handle the occasion.
Cahill: This is going to be like the "Queen's Gambit" match; a chess game between two really smart tennis players. I'm anticipating it being incredibly physical, and that's going to favor Novak. Even if it's a set all after an hour and 45 minutes to two hours, the advantage will go to Novak after that. I'm taking Novak in four sets.