History
In the early days of golf, the hole sizes were unpredictable. The standard size of the cup evolved purely by chance. A pipe used to reinforce a crumbling hole at St. Andrews was 4 1/4 inches.
Size
The hole must be 4 1/4 inches in diameter and at least 4 inches deep, according to the United States Golf Association's Rules of Golf.
Features
If the golf course uses a liner inside the hole, that liner must be at least 1 inch below the putting surface and its outer diameter must not exceed 4 1/4 inches.
Considerations
Because greens receive intensive foot traffic, course maintenance workers move the holes at least twice a week, but busy courses will change the holes daily. Moving the holes allows the grass time to recover from wear.
Fun Fact
Some courses play an 8-inch cup tournament. The maintenance staff cuts large 8-inch holes in difficult locations on the green, often on a slope or mound.
About The Author
Kim Kleinle is a PGA/LPGA professional and a member of a select group certified in instruction by the Professional Golfers' Association. She began writing in 1980 after earning her degree. Her work has appeared online, in "Northeast Golfer" and in newspapers, including the "Scranton Times." Kleinle holds a Bachelor of Arts in journalism from Point Park University, Pittsburgh.