Number four for good reason
...the Scot saw off Frane’s Michael Llodra in the third round with some imperious tennis, closing out the third set without dropping a game.
With the way the Brit is going, Andy Morris can't imagine Andy Murray's progress towards another final being held up for too long by Japan's Kei Nishikori on Wednesday.
Murray, the number four seed, is producing pretty much the same kind of inspired tennis that has taken him to two successive finals in the Australian Open.
He had a few early problems in his opening match against Ryan Harrison, when he dropped the opening set, but since then he's been getting better and better.
Mikhail Kukushkin retired in their fourth round encounter, hoisting the white flag when trailing by two sets (both won 6-1), and the Scot saw off Frane's Michael Llodra in the third round with some imperious tennis, closing out the third set without dropping a game.
Nishikori pulled off one of the outstanding results of the championship so far in beating Jo-Wilfried Tsonga in a five-setter in the fourth round. It was the second time he'd been taken all the way, as Aussie Matthew Ebden led him by two sets to love in the second round before falling away.
He's already achieved more than he could have wished for, becoming the first Japanese man in the Open era to reach the fourth round of the Australian Open.
Murray says he's wary of Nishikori's "deceptive" power, but perhaps he's just deceiving himself. He beat Nishikori 6-0 6-3 in their only meeting so far in the Shanghai Masters last year, and it would be a surprise if he didn't get through in straight sets here.