epa06597320 Juan Martin Del Potro of Argentina in action against Alex De Minaur of Australia during the BNP Paribas Open at the Indian Wells Tennis Garden in Indian Wells, California, USA, 11 March 2018.  EPA/PAUL BUCK
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'