Juan Martin Del Potro has had to remodel parts of his game since returning from wrist injuries but that has not prevented a return to the top 10. Paul Buck / EPA
Juan Martin Del Potro has had to remodel parts of his game since returning from wrist injuries but that has not prevented a return to the top 10. Paul Buck / EPA

Juan Martin del Potro can be regarded as an elite star again alongside Federer and the rest of the 'Big Five'