Novak Djokovic remained hungry and motivated even after winning everything in his sport. The former world No. 1 completed the puzzle just this year, finally winning the gold medal at the Paris Olympics after chasing that goal throughout his career.

Novak Djokovic launched his career in the shadow of Roger Federer and Rafael Nadal but has surpassed them both and is widely considered the greatest player of all time.

Recently retired Andy Murray will team up with Novak Djokovic, working with him as a coach through the Australian Open in January.