In his worst season since 2001, Roger Federer only managed one title in 2013. The Swiss was unable to contend with Rafael Nadal, Novak Djokovic and Andy Murray who left him behind. Willing to make radical changes, Roger started playing with the most oversized racket frame and claimed new faces, contacting one of his idols, Stefan Edberg.The Swede went to Dubai with Roger for a week, where they met and chemistry was born. With Stefan at his side, Federer reached the semifinal of the Australian Open in 2014 before winning their first title together in Dubai.The Swiss was a finalist in Indian Wells and Monte Carlo before defending his Halle title and moving on to the Wimbledon final. He lost it to Novak Djokovic in five exciting sets a …