The top two are making their presence felt in the toughest tennis tournament of the year.
Both Novak Djokovic and Roger Federer have not dropped a set in the event that showcases the top eight-ranked players in the world
Saving the Best for Last
Djokovic's determination to finish the year ranked World No. 1 seems inevitable as he has lost only five games in the event. He is one more victory away to be announced as the best player the world for a third time in the past four years.
The Fed Express has also looked impeccable in his two matches. He dispatched Milos Raonic 6-1,7-6 a few days ago and then dominated this year's US Open finalist, Kei Nishikori.
Things start to Heat up
As the last few group matches will be played, who is going to progress to the semi-finals is going to fascinating.
Group B will show case the best match up with hometown hero, Andy Murray needing to beat Federer to have any chance to progress. Nishikori needs to win over a winless Raonic. Both of those will be on The Tennis Channel tomorrow.
Group A will see Djokovic face Tomas Berdych while a win-less Cilic takes on Stan Wawrinka. Berdych is the one under pressure as a loss from him will almost guarantee his season is done. These matches will be showcased on The Tennis Channel on friday.