Golf ball with improved directional stability in putting stroke

A golf ball having a predetermined radius, and a spherical outer surface with a multiplicity of dimples formed therein, wherein said spherical outer surface has at least one hit portion which has a diameter of 5-15 mm and within which said dimples are absent except a single one of said dimples that is located at a central part of said hit portion.

A golf ball having a predetermined radius, and a spherical outer surface with a multiplicity of dimples formed therein, wherein said spherical outer surface has at least one hit portion which has a diameter of 5-15 mm and within which said dimples are absent, and wherein a plurality of grooves are formed within said hit portion and are distributed evenly in the entirety of said hit portion, each of said grooves having a predetermined shape and a width which is smaller, than a diameter of each of said dimples.

A golf ball having a predetermined radius, and a spherical outer surface with a multiplicity of dimples formed therein, wherein said spherical outer surface has at least one hit portion which has a diameter of 5-15 mm and within which a protrusion is formed in each of said dimples, said protrusion having a distal end whose radial distance from the center of the golf ball is equal to said predetermined radius of the golf ball.