Medvedev's level has absolutely come down in this set - essentially, he's still playing most of the big points better - and Novak's has not gone up to take advantage. Pretty telling. This window he's crawling through is getting smaller.
Let's see if Medvedev can keep his foot on the gas here. Really irritating that announcers are giving all the credit for Djokovic's performance to him instead of noting that Medvedev is playing pretty well and has done the rattling.