By 2010, Murray and Novak Djokovic had separated themselves from the rest of men's tennis, joining Federer and Nadal in the Big Four
The ATP Finals is undoubtedly one the most important and prestigious tournaments of a season, and the years have seen some great tennis superstars steal the show.
Murray rose to the World No.1 ranking while he was working with the Czechoslovakian coach.
Novak Djokovic will contest his 31st major final on Sunday, which ties Roger Federer for the all-time record, and his 9th at the US Open, which breaks a tie with Pete Sampras and I...