Ferrer cruises through
Fourth seed David Ferrer cruised past Kei Nishikori with what he described as "one of the best matches of my career at the Australian Open".
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Nishikori, the 16th seed, offered little threat to the Spaniard who won 6-2 6-1 6-4 in two hours and 10 minutes to advance to his third successive quarter-final in Melbourne.
Ferrer broke twice in each of the first two sets to set up a comfortable win. The third was wild as Nishikori started to go for broke but, hampered by a knee injury, he failed to seriously threaten Ferrer's chances of victory.
The fourth seed said: "It was a tough match but in the first two sets I didn't make any mistakes.
"Today I played very well, it was one of the best matches of my career at the Australian Open.
"I'm happy with my game."
His run this week means Ferrer will move into the top four of the world rankings but the modest 30-year-old admits he is some way behind established quartet Novak Djokovic, Roger Federer, Andy Murray and the injured Rafael Nadal.
He added: "I am only in the top four because Rafa has been injured for a long time. That is the truth.
"I think the top four, they are better (than me)."
Ferrer will take on another Spaniard, Nicolas Almagro, in the last eight after he advanced when Janko Tipsarevic had to withdraw through injury.