Djokovic's Downfall: A Cautionary Tale for Aging Champions The sudden exit of Novak Djokovic from the US Open has sent shockwaves through the tennis world.
The 39 year old Serbian's five set defeat to Mariano Navone raises questions about his ability to compete at a high level, especially in oppressive humidity.
Djokovic's unforced errors – 70 in total – paint a more nuanced picture of his loss.