As we begin yet another year of tennis, the greatness of Novak Djokovic is without question.
The 28-year-old Serbian has taken his game to an incredible new level over the past 12 months, winning three of the four Grand Slams in 2015 as well as the end of season Tour Championships in London.
Long gone is the debate of who will take over once Roger Federer and Rafael Nadal have sailed into the sunset, with Djokovic overtaking the pair as tennis' best player.
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He starts the 2016 season at a very happy hunting ground having won more Grand Slams in Melbourne (five) than any other.
Whilst a sixth Australian Open title will be welcomed with open arms, the goal for Djokovic must surely be to win the French Open for the first time in his career. As all tennis greats will tell you, players are judged on their ability to play on all surfaces.
Nadal was forced to learn how to play and win on grass, whilst Federer had to overcome the hurdle of clay tennis. That they did proves their unerring ability to perform in every condition - and it is now up to Djokovic to do the same.
The most impressive part of the right-hander's reign is that he has seemingly sprinted clear of the chasing pack and left the competition in his wake, currently boasting double the ranking points of his nearest rival in Andy Murray.
The big question in men's tennis, therefore, is: who can challenge the Serbian?
The way the Australian Open draw has panned out, we could see a repeat of the last year's Wimbledon final in the semis.
Federer would love nothing more than to knock Djokovic out of the tournament amidst the latter stages of his career, though the sheer power of the Serbian suggests his Swiss rival will struggle to do so.
Likewise, second-seed Murray will have to overcome a challenge from Nadal or Wawrinka if he's to meet and beat Djokovic in the final - a tough route indeed.
What is clear is the next few weeks will hold upsets and incredible tennis - and it's likely Djokovic will only feature in the latter.