I wanted to take a look at what it is exactly that makes the best 4 players in the world as good as they are. Unfortunately the majority of analysis and commentary on tennis, as in most sports, succumbs to a level of hyperbole and uses a lexicon that while sounds impressive, tells us absolutely nothing about the different facets of the sports we love.
The top four players in the world, for the last 4 or 5 years now, have been Roger Federer, Rafael Nadal, Novak Djokovic, and Andy Murray. The first two have legitimate claims to be the best tennis player of all time; Djokovic has since partially eclipsed them in their prime by putting together the best season of all time in 2011; and Murray, while not belonging in the same category of all-time greats until he wins a slam, has been a consistent member of the top 4 and a huge factor in the era.
Subsequently I created a chart with the 15 categories I consider most important in the make-up of these great players and rated each player out of 10. Some attributes are physical and tangible, some are mental and illusive, and the categories are not perfect - but it hopefully gives an illustration.