Golf ball

A golf ball, comprising:

• a spherical core;
• and
• a cover covering the spherical core,
• wherein the spherical core is formed from a rubber composition comprising a base rubber, a co-cross-linking agent, a cross-linking initiator, and an unsaturated fatty acid and/or a metal salt thereof, the co-cross-linking agent comprises at least one of α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and a metal salt thereof, the unsaturated fatty acid and/or metal salt thereof excludes an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and a metal salt thereof and is formed such that an unsaturated aliphatic carboxylic acid that forms the unsaturated fatty acid and/or metal salt thereof has a hydroxy group, the rubber composition further includes a metal compound when the co-cross-linking agent is consisting of an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and the rubber composition includes the co-cross-linking agent in a range of 25 parts by mass to 35 parts by mass, and the unsaturated fatty acid and/or metal salt thereof in a range of 11.7 part by mass to 35 parts by mass with respect to 100 parts by mass of the base rubber.