Nishikori eyes further success in 2015

Japanese tennis star and current world number five Kei Nishikori has revealed his ambitions for the year ahead. 

The 24-year-old hopes to go one better than last year when he reached the final of the 2014 US Open.

Although he was beaten in straight sets, Nishikori is aiming to build on that experience.

He said: "One goal is to at least reach the semifinals in all of them (the four Grand Slam events).

Many consider 2014 the tennis star's breakthrough year, and he has revealed his fourth round defeat by Rafael Nadal at the Australian Open was a high point for him. 

He said: "I was able to come away from that match with a good feeling. That boosted my confidence and I changed to a more attacking brand of tennis."

Nishikori revealed that he expects a good start to his season at the Australian Open, which kicks off in Melbourne on 19 January 2015.

He said: "First of all, I want to get some positive results in Australia, where I find it easy to play."