Pablo Carreno Busta, Sam Querrey, and Kevin Anderson are leaving the door to the World Tour Finals wide open. Juan Martin Del Potro and Jo-Wilfried Tsonga are still walking through it.
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.