World No.3 Federer made it to the Wimbledon and US Open finals this season but could not win against world No.1 Novak Djokovic of Serbia.

Edberg, who as a player had bagged six Grand Slams, helped the Swiss ace to take on a more attacking approach.

The 17-time Grand Slam winner in a statement said it was a 'dream come true' to be learning from Edberg who he said was his 'childhood idol'.

Severin Luthi will continue to be Federer's main coach but will be joined by Croat Ivan Ljubicic. Under Edberg, Federer grabbed five ATP World Tour (ATP) titles in 2014 and six more in the present year.

"Although it was only supposed to be for 2014, Stefan was great and agreed to extend the partnership through this year which I really appreciated," Federer added. "He taught me so much and his influence on my game will remain. He will always be a part of my team”.

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