(15) Stanislas Wawrinka
Destined to live forever in Roger Federer's shadow is Swiss number two Stanislas Wawrinka.
He's no mean player himself though and has often been a member of the top 20, going as high as ninth in the rankings back in 2008.
Wawrinka and Federer teamed up to win gold in doubles at the 2008 Olympics but have been unable to take their country to the latter stages of the Davis Cup.
Has made the last 16 of all four Grand Slam tournaments, including the quarter-finals here in Melbourne two years ago.
Look out for his classic long-wound backhand - a shot of grace but also power.
However, results against the true elite have been few and far between - expect another second week exit.