My friend, I need to reply here because "the requested thread cannot be found". Medvedev was Djokovic's "thoughest" opponent in Australia because Djokovic played so bad like a pusher hitting weak balls to the service line. He raised his level in the final. No way was Medvedev defeating Nadal in the final in my view.
My point is that they make fun of the Russian as Nadal's potential rival in RG when he was precisely the rival who gave Serbian more problems in the Australian Open.
Nothing more than that.