Australian Open 2018 Preview

(Clockwise from top left) Jack Sock, Sam Querrey, Tomas Berdych, Kevin Anderson looking for that elusive Grand Slam title

Americans Jack Sock and Sam Querrey are dangerous floaters, along with Tomas Berdych and Kevin Anderson. Berdych and Anderson are both Grand Slam finalists at Wimbledon and the US Open respectively. Sock suffered a hip injury at the recent Hopman Cup while Querrey, Berdych and Anderson are all on the wrong side of 30, so it would be a surprise to see them go all the way.

Nick Kyrgios is an enigma

The enigma that is Australia's Nick Kyrgios has all the tools but suffers from mental implosions and also falters when playing top players. His epic semi-final match against Federer at Indian Wells last year and his victory at the Brisbane International this year should boost his confidence. He will need to decide if tennis is a passion or a job for him.