Novak Djokovic has to stay alert to know if he's coming or going as the 2012 tennis season continues its frantic post-Olympic pace with the US Open start looming in less than a fortnight.
It was the end of an era at Crandon Park for the Miami Open last year. From the Lipton, to the Nasdaq 100, to the Sony Ericsson, to the Sony, to the Miami Open presented by Itau, Key Biscayne saw it all.