The most important part to golf is the short game. The short game is when you are around the green and you need to chip/putt. Alot of people do not think about it but almost half of your shots are just in putting. If you play a golf course and the course's par is 72 and lets say you shoot 72 and you 2 putted every hole which is average. Thats 36 shots just in putting which is half par for the course.

This is a great drill for chipping because if you miss the green you are going to have to chip and this drill teaches you to chip within 3 feet of the hole. Most of the time you will make a 3 footer so thats why they use a 3 foot circle for demonstration.

Here you will see Graham McDowell helping an amateur with their short game. Graham is one of the best putters on the PGA tour and you will notice that all the players on tour are very good but what separates them from amateurs is putting. They average around 25 putts where an average golfer is around 35.