主权项 |
1. A golf ball comprising:
an inner core layer having an outer diameter of about 0.50 to 1.55 inches, a first outer surface, and a geometric center, the inner core layer comprising a first substantially homogenous composition such that the geometric center has a hardness of about 51 to 76 Shore C; an outer core layer disposed about the inner core layer, the outer core layer having an outer diameter of about 1.30 to 1.62 inches, a second outer surface having a hardness of about 85 to 98 Shore C, and comprising a second substantially homogenous rubber composition; and a cover layer disposed about the outer core layer; wherein the geometric center and the first and second outer surfaces each have a hardness, the hardness of the second outer surface being greater than the hardness of the geometric center to define a positive hardness gradient of about 7 to 30 Shore C. |