The 2015 Tennis calendar year is going to be concluded with ATP World Tour Finals that schedules to take place from 15 to 22 November. Current world number 1 Novak Djokovic and six time winner Roger Federer are placed in the same group of 2015 Barclays ATP World Tour Finals.

Along with Novak Djokovic and Roger Federer, Tomas Berdych and Kei Nishikori are also placed in the same group that is named as ‘Stan Smith’. In the other group ‘Ilie Nastase’ four players Andy Murray, Stan Warinka, Rafael Nadal and David Ferer are placed.
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Groups

Stan Smith	Ilie Nastase
Novak Djokovic	Andy Murray
Roger Federer	Stan Wawrinka
Tomas Berdych	Rafael Nadal
Kei Nishikori	David Ferer

Federer said on ATP Website, “These groups were going to be tough regardless of who was going to be in the group. But I’m excited to be back and can’t wait for it to start.”

Novak Djokovic bags 22-match winning streak before entering in the season ending event which will be hosted at London in United Kingdom.