Djokovic is seeking his fifth ATP Finals title in London to go with his first, which he won in Shanghai in 2008. So you at least see a certain player three times playing.
Nadal this week pulled out of the tournament in London - guaranteeing Djokovic will end the season as the world number one.
He is the youngest player ranked in the top 20 by the ATP and has a career-high ranking of No 15 in the world.More news: Historic filming location for HBO's Westworld burns down in Cali wildfire
The 31-year-old looked tired in his defeat to the Russian big-hitter Karen Khachanov in the Paris Masters final, but there is no denying that he is back to his sliding, defending, counter-punching best. "I've learned a lot in each of the past two years", said the Austrian, who beat Gael Monfils in 2016 and alternate Pablo Carreno Busta in 2017. At Cincinnati, Federer hadn't lost in seven final appearances and hadn't suffered a service break since 2013.
ATP Coach of the Year: ATP coach who helped guide players to higher level of performance during the year.
Does all this mean that the other six men in the fray at the Finals will be reduced to supporting actors or is there a pleasant surprise in store like Grigor Dimitrov's triumph past year?
John Isner, like Anderson, will also be making his debut at the tournament. Thiem has recorded two wins in two editions so far.More news: Flight attendant breastfeeds stranger's baby on flight
The 2018 ATP Tour Finals kick off on Sunday 11 November in London and will feature a number of faces familiar to ASB Classic fans. "Djokovic, Zverev, Cilic, Isner is a pretty rough one". Bulgarian Dimitrov, who climbed to a career-high No. 3 after winning in London past year, hasn't even made it, slipping to No. 19 in the world.
But Ferreira finished the race in ninth place and needed an Andre Agassi injury to get in, whereas Anderson has qualified as of right as the sixth-best player of this year.
'I personally have had phenomenal success and I should be the last one talking about moving it anywhere. There were Lleyton Hewitt, Andy Roddick, Juan Carlos Ferrero and Marat Safin.
"It seemed to me that Sampras and Agassi had to be out of the picture before Federer gained the confidence to win. So that's what we are going to see and a great star will come through".More news: Giroud breaks goal duck in Chelsea win against BATE Borisov
With more players still to be announced over the coming weeks, the tournament is shaping up to be one of the most well rounded in recent times with strong fields for both the Women's and Men's weeks already confirmed.