The dimple pattern maximises lift while minimising drag. Others tried mercury, cork and metal cores. Only in 1972, when Spalding introduced the first two piece ball, the Executive, was the basic Haskell design improved upon. Since then further constraints have been proposed which are detailed in the rules. Between 1931 and 1990, both organisations differed on the dimensions of the golf ball which meant that the game played on either side of the Atlantic was similar but different.
Today there is a rich variety of golf balls to suit the individual game and circumstance.
Some offer control, some offer distance while others are suitable for practice only. Antique golf balls are avidly collected and are becoming increasingly valuable.