Nishikori's absence gives Chung his chance to shine

The absence of Japan's Kei Nishikori from this year's Australian Open has turned the spotlight on South Korea's Chung Hyeon as Asia waits for its first men's Grand Slam singles champion.

Former world No 4 Nishikori came close when he reached the US Open final in 2014 but he has since struggled to make a serious Slam challenge.

That's why the emergence of 21-year-old Chung is causing plenty of excitement.