Stars in the spotlight

Novak Djokovic (SRB), 28. Ranking: 1

Grand Slam titles: 10

The supreme Serb may need to suffer an off-day if anyone is to prevent him from winning a sixth Australian Open title. Djokovic was virtually unstoppable in 2015, when he put together one of the best seasons ever seen: three Grand Slam titles among 11 tournament victories, and a win-loss record of 82-6. As the season closed, it was only the rapier backhand of Stan Wawrinka in the French Open final that prevented Djokovic compiling the first men's calendar-year grand slam since Rod Laver in 1969. The world No 1 also became the first player to top 16,000 rankings points, and currently stands on 16,790 - nearly double the total of second-place Andy Murray. All this in the year after he got married to his long-time partner Jelena Ristic, and became a father. Djokovic's upbringing in war-torn Belgrade may have grounded him emotionally, and in the midst of last year's terrific run, he was a picture of composure and calm. He has picked up where he left off at the start of this season, beating Rafael Nadal 6-1, 6-2 in the Qatar Open final, a result which edged him closer to becoming the first player to reach $100 million in career prize money. Certainly Nadal was in no doubt about the quality of the opposition he faced in Doha. "I know nobody playing tennis like this ever," said the 14-time Grand Slam winner. "Since I've followed this sport I've never seen anybody playing at this level."