Patent ID: 8257200

Claim:
A golf ball comprising: an inner core having an outer diameter of about 0.500 inches to 1.550 inches, a first outer surface, and a geometric center, and being formed from a first substantially homogenous composition throughout such that the geometric center has a hardness of about 51 Shore C to 76 Shore C and the first outer surface has a hardness of about 50 to 75 Shore C; an outer core layer disposed about the inner core, the outer core layer having an outer diameter of about 1.30 inches to 1.62 inches, a second outer surface having a hardness of 85 to 98 Shore C, and an inner surface having a hardness of 68 to 78 Shore C, and being formed from a second substantially homogenous rubber composition throughout; and a cover layer disposed about the outer core layer; wherein the geometric center, the first and second outer surfaces, and the inner surface each have a hardness, the hardness of the second outer surface being greater than the hardness of the inner surface to define a positive hardness gradient of +7 to +30 Shore C, and the hardness of the first outer surface being lower than the hardness of the geometric center to define a negative hardness gradient of −1 to −5 or −6 to −15 Shore C.