Let's be honest, Nike $ucks, low quality shoes and apparel. Not even for free I wanted their stuff.
Berdych/Del Potro/Dimitrov aren't going to dominate ATP so Nike is actually being smart and dropping them.
Another fact is, these guys come from small countries and may not be marketable enough. Nadal and Federer are from small countries as well, but they dominate the Tour unlike the others, who buys stuff because of Berdych and Del potro, Dimitrov.
I'd be surprised if they don't drop Tomic, Tomic might go to Yonex as well.
2X YY 97T 310 with YY PTSPIN 47/43. ---Yonex PC Light, waiting for VCore TourG. Stan is the MAN.