There is a whole lot more to athletic ability than the "tests" that the OP suggests. How about:
Speed
Agility
Hand-Eye Coordination
Reflexes/Reaction Time
Power (explosive/speed strength)
Anaerobic Endurance
Aerobic Endurance
Analytic Aptitude
Flexibility
Durability
Strength
Nerves
...
Speed: Djokovic, Nadal, Murray, Federer
Agility: Djokovic, Federer, Nadal, Murray
Hand-Eye Coordination: Federer, Djokovic, Nadal, Murray
Reactions: Federer, Murray, Djokovic, Nadal
Power (explosive strength): Nadal, Federer, Murray, Djokovic
Anaerobic: Djokovic, Nadal, Murray, Federer
Aerobic: Nadal, Djokovic, Murray, Federer
Analytic Aptitude: Federer, Djokovic, Murray, Nadal
Flexibility: Djokovic, Nadal, Federer, Murray
Durability: Nadal, Djokovic, Murray, Federer
Strength: Murray, Nadal, Federer, Djokovic
Nerves: Djokovic, Nadal, Federer, Murray
I've always maintained that Djokovic is the most athletic player of all time. He's exceptionally good in almost every aspect of athletic ability - Nadal's got him beat in strength and stamina, but that's about it. Speed, flexibility, explosive movement, endurance, prolonged intensity, he's got the whole package.