Patent ID: 8690713

Claim:
A golf ball comprising: a core comprising an inner core layer and an outer core layer, the inner core layer having a geometric center hardness of 66 to 80 Shore C and a surface hardness of 68 to 80 Shore C and being up to 5 Shore C harder than the center hardness to define a shallow positive hardness gradient; an outer cover layer having a Vicker's hardness of about 0.18 to 0.40 as measured on the ball at 0.49 N with a 10-s hold time; and an inner cover layer comprising an ionomer and being disposed between the core and the outer cover layer; wherein the outer core layer has a surface hardness of 86 to 96 Shore C and is harder than the geometric center by about 10 to 20 Shore C to define a positive hardness gradient.