Patent ID: 6875131

Claim:
A golf ball comprising: a solid core having an outer diameter of less than about 1.59 inches and comprising polybutadiene and a cis-to-trans catalyst such that, upon curing, the core has a first amount of trans-polybutadiene at an interior location and a second amount of trans-polybutadiene at a surface location, the first amount being at least about 6 percent less than the second amount; an outer cover layer having a first material hardness and comprising a elastomer formed from a castable reactive liquid material; and a casing disposed between the core and the cover layer, the casing comprising polyurea and having an outer diameter of between about 1.59 inches and about 1.64 inches and a second material hardness of between about 30 and about 70 Shore D; wherein a ratio of the second material hardness to the first material hardness is greater than 1.5.