Juan Martin Del Potro of Argentina poses with the winner's trophy after defeating Roger Federer of Switzerland during the men's final on Day 14 of the BNP Paribas Open at the Indian Wells Tennis Garden. Pic/AFP

Juan Martin Del Potro, once one of tennis' hottest young talents before his career was derailed by injuries, won the Indian Wells Masters on Sunday two years after almost quitting in frustration. "I couldn't imagine this moment. I mean, everybody knows I was really close to quitting tennis before my third surgery on my left wrist," said Del Potro after upsetting world No. 1 Roger Federer 6-4, 6-7 (8/10), 7-6 (7/2) in Sunday's championship match. "I made a big effort to come back. I have everything what I want, and I want to keep improving my game to see what can I do.