Rafael Nadal (ESP)
Rafael Nadal fought back from a career-threatening knee injury to take 2013 by storm, winning 10 titles including the French Open and US Open, and also edged Novak Djokovic to finish as the year-end world No 1. He started this year with a win in Doha and he will be keen to make up for his injury-forced absence from Melbourne last year.
World ranking: 1
Birthdate: June 3, 1986
Birthplace: Manacor, Mallorca, Spain
Residence: Manacor, Mallorca, Spain
Height: 6ft 1in (1.85m)
Weight: 188lbs (85kg)
Plays: Left-handed
Turned pro: 2001
Coach: Toni Nadal
Career titles: 61
Grand Slam singles titles: 13
Career prize money: $64,826,283
Best Australian Open result: Champion (2009)
Roger Federer (SUI)
The all-time Grand Slam record-holder, now 32, faces a challenge to remain at the top of men's tennis after falling to world No 6. Federer, with only one major title in the past three years, and just one win last year, started the year by reaching the final in Brisbane where he suffered a shock loss to fellow veteran Lleyton Hewitt. He has enlisted childhood idol Stefan Edberg as a coach this year.
World ranking: 6
Birthdate: Aug 8, 1981
Birthplace: Basel, Switzerland
Residence: Bottmingen, Switzerland
Height: 6ft 1in (1.85m)
Weight: 187lbs (85kg)
Plays: Right-handed
Turned pro: 1998
Coach: Severin Luthi, Stefan Edberg
Career titles: 77
Grand Slam singles titles: 17
Career prize money: $79,265,175
Best Australian Open result: Champion (2004, 2006, 2007, 2010)
Novak Djokovic (SRB)
Must be regarded as the favorite after winning his first Grand Slam title at Melbourne Park in 2008 and reclaiming the trophy in 2011, 2012, 2013, the first hat-trick of the Open era. Won four tournaments in a row at the end of last season, including the World Tour Finals. Djokovic has made the surprise addition of Boris Becker to his coaching team in a bid to find a new dimension.
World ranking: 2
Birthdate: May 22, 1987
Birthplace: Belgrade
Residence: Monte Carlo
Height: 6ft 2in (1.88m)
Weight: 176lbs (80kg)
Plays: Right-handed
Turned pro: 2003
Coach: Boris Becker, Marian Vajda
Career titles: 41
Grand Slam singles titles: 6
Career prize money: $58,134,445
Best Australian Open result: Champion (2008, 2011, 2012, 2013)
Andy Murray (GBR)
Murray emotionally ended Britain's 77-year men's Wimbledon title drought last year but he will be doing well to reach his fourth Melbourne final after undergoing back surgery in September. Murray returned to action late last month and has been in tentative form with defeats to Florian Mayer and Jo-Wilfried Tsonga.
World ranking: 4
Birthdate: May 15, 1987
Birthplace: Dunblane, Scotland
Residence: London
Height: 6ft 3in (1.90m)
Weight: 185lbs (84kg)
Plays: Right-handed
Turned pro: 2005
Coach: Ivan Lendl
Career titles: 28
Grand Slam singles titles: 2
Career prize money: $30,294,823
Best Australian Open result: Runner-up (2010, 2011, 2013)
(China Daily 01/12/2014 page12)