Negative hardness gradient inner core for dual core golf ball

A golf ball comprising:

• an inner core having a first outer surface and a geometric center and being formed from a first substantially homogenous formulation throughout such that the first outer surface has a Shore C hardness of about 55 and the geometric center has a Shore C hardness of about 65;
• an outer core layer having a second outer surface and an inner surface and being formed from a second substantially homogenous formulation throughout such that the second outer surface has a Shore C hardness of about 85 and the inner surface has a Shore C hardness of about 75;
• and
• a cover layer;
• wherein the geometric center, the first and second outer surfaces, and the inner surface each have a hardness, the hardness of the first outer surface being lower than the hardness of the geometric center to define a negative hardness gradient of about −10, and the hardness of the second outer surface being greater than the hardness of the inner surface to define a positive hardness gradient of about 10.