Golf balls having cores made of polybutadiene rubber blends

A golf ball, comprising:

• a) a dual core having an inner core and outer core layer, the inner core having an outer surface and geometric center and the outer core layer having an outer surface and inner surface;
• the inner core comprising about 50 to about 95% by weight non-metallocene-catalyzed polybutadiene rubber and about 5 to about 50% by weight metallocene catalyzed polybutadiene rubber, and the outer core layer comprising non-metallocene-catalyzed polybutadiene rubber with no metallocene-catalyzed polybutadiene rubber being present in the outer core layer;
• wherein the center of the inner core and surface of the outer core layer each has a hardness and the surface hardness of the outer core layer is greater than the center hardness of the inner core;
• and
• b) a cover having at least one layer disposed about the dual core.