Boris Becker believes the draw for the ATP Finals gives Roger Federer a big advantage over Novak Djokovic in next weeks tournament in London.
The Serbian star is guaranteed to finish the year as world number one after Rafael Nadal pulled out of the season-ending tournament due to both abdominal and ankle injuries.
Nadal would have been in the same group as Djokovic, but far from making it easier, Becker believes his big-serving replacement, John Isner, has actually made the draw even tougher.
I would reckon the Novak Djokovic group is the tougher one, said the German, who coached Djokovic for three years.
Djokovic, [Alexander] Zverev, [Marin] Cilic and Isner is a pretty rough one.
On the other hand, Kevin Anderson isnt too bad either on serving.
Normally the big servers prefer indoors because they have the advantage. Roger Federer has a big serve too.
While Federer will need to try and stop the big-serving South African Anderson, who beat him at Wimbledon, his other opponents are Dominic Thiem and Kei Nishikori.
On Nadals absence, Becker added: Unfortunately we heard the news about Nadal. He was challenging for the number one spot with Novak Djokovic, who will now finish regardless as the number one player.