On paper, Djokovic should dominate this match-up. Medvedev has a good serve but Djokovic can neutralize it just as does against bigger servers, like Raonic. Then off the baseline, Djokovic hits a cleaner ball, is steady and takes ball early. Medvedev has a lot of feel, is tricky, awkward and difficult to beat but this is not the match-up that can stand up to an in form Djokovic. Medvedev is very solid and good enough to beat Djokovic every now and then but i just don't think he can hang with an in form, top Djokovic on hardcourt.
18 and counting..... it's plausible Novak will end with record of slams and weeks at #1 (getting close here too) and Fed and Nadal fans will just hate it....