(8) Janko Tipsarevic
Something of a late bloomer, it is only in the past couple of seasons that Tipsarevic has fulfilled his undoubted potential and established himself amongst the game's elite.
For many years the Serb was, perhaps unsurprisingly, rather put in the shade by the exploits of compatriot and world No.1 Novak Djokovic.
But Tipsarevic came of age in the 2011 season as he finally claimed a first career ATP title in Kuala Lumpur, quickly followed by a second in Moscow, and finished the season inside the world's top 10.
It was also in 2011 that he reached his first grand slam quarter-final, at the US Open, a feat he would repeat at Flushing Meadows in 2012 after another successful season.
But those two last-eight appearances in New York remain the only ones on his Grand Slam record with his past exploits at the Australian Open particularly poor.
The 28-year-old has only twice reached the third round in Melbourne in eight attempts, in 2008 and 2012, succumbing in the second round on no fewer than five occasions.
Last year he was sent packing in straight sets by France's Richard Gasquet in round three and will be hoping to break new ground this time around as he looks to confirm his status in upper echelons of the game.
Has started the year well enough, winning the title in Chennai.