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Right Foot Back

Purpose

1. To prevent an outside-to-inside swing. The stance in this drill effectively limits your ability to cut across the ball. It forces you to swing from the inside. Although the clubface being open to the swing path (not necessarily the target) is the actual cause of the slice, the outside-to-inside swing often a big factor in creating the open clubface. The outside-to-inside swing has a natural tendency to cause an open clubface, creating a slice.
2. To learn the effect of your swing path on the flight of the ball. The path of the clubhead (swing path) dictates the starting direction of the ball's flight. This is good news and bad news. The bad news is that an inside-to-outside swing path will tend to have the ball start out to the right of the target line. The good news is that it also tends to cause you to strike the ball with a square or slightly closed clubface. This combines to reduce your likelihood of slicing and increases the likelihood of creating a draw (right to left curving flight of the ball).

Do's and Don'ts
Practice the .Split Grip Drill. before doing this drill to get the feeling of the proper rolling of the right hand and arm over the left - the release. This drill and the .Split Grip Drill. will help you learn to draw the ball. That is one sure cure for the slice!