| 摘要 |
Provided is a golf ball superior in a flight distance of a driver shot. The golf ball comprises a sphere shaped core and at least one layer of cover covering the sphere shaped core. The sphere shaped core is characterized in that: when JIS-C hardness is measured at positions having distances of 0% (core center), 37.5%, 75.0%, and 100% (core surface) from a core center, a hardness difference between a surface hardness (Hs) and a center hardness (Ho) is 20 or more; a ratio of a hardness difference (H37.5.-Ho) between a 37.5% position hardness (H37.5) and the center hardness (Ho) to a hardness difference (H75.0-Ho) between a 75.0% position hardness (H75.0) and the center hardness (Ho) is 0.6 or less; a compression deformation amount (D) from the state of applying an initial load of 98N to the state of applying a finish load of 1275N and the hardness at 37.5% position satisfy a relation: H37.5 <= -9×D+95. |
