Juan Martin Del Potro. Pic/AFP

The stars are finally starting to align for Juan Martin Del Potro who will be seeking his third straight ATP title at the Miami Masters this week. The south Florida showcase got an additional boost on Sunday when Del Potro saved three championship points to hand world number one Roger Federer his first loss of 2018 in a thrilling 6-4, 6-7 (8/10), 7-6 (7/2) victory at the Indian Wells Masters. With the win, combined with injuries to Rafael Nadal, Novak Djokovic and Andy Murray, it is now looking like Del Potro is the biggest threat to Federer's rule over the ATP Tour.