Nishikori is 1000 to 1 to win the Australian Open, at youwin. Just wow that's crazy odds because if he plays like he did this tourny he could win a slam, of course it's not very likely at all that he will be in this sort of form again and keep it up for a whole slam but still at 1000 to 1 it's pretty good betting odds.
Alright let's not get too ahead of ourselves. If Andy had beaten Raonic I doubt Nishikori would even have taken a set. He's had a bit of a poor season from the AO 'til now, and although this win will cover his Shanghai points from last year, he still has another 300 to defend in Basel. He'll probably finish the year in the high teens.
His record against the top guys is poor and he himself is a bit too inconsistent to see off even two of the top 10 guys in succession. The talent is there to go far but he's a million miles away from the top 4 and his fitness is questionable.