Video : Highlights of Rafael Nadal vs Kei Nishikori, Australian Open 2014

World No.1 Rafael Nadal needed more than 3 hours to overcome young Japanese star Kei Nishikori 7-6,7-5,7-6 to reach the quarter finals at the Australian Open.

The Spaniard will have to get past another up-and-coming star in Bulgarian Grigor Dimitrov to book his place in the semifnals.