Two players I work with -- Justin Rose and Tiger Woods -- sometimes make what I call a "violent transition" from backswing to downswing, rather than let the change of direction happen smoothly. Their goal is to have the speed of the downswing increase gradually, with the fastest part happening at the bottom. When the transition gets violent, it's hard to square the face at impact.
Many average golfers also suffer from a poor transition. That's mostly because they take the club back too quickly, and then fail to complete the backswing before starting the downswing.
If you have this problem, a simple, time-tested drill I use with Rosey and Tiger can help. Next time you're practicing, when you reach the top of your swing, pause for a second before swinging down.
The reason I suggest doing it on the range is because, if you're quick at the top, this drill will feel very strange and might take a while to get used to. But if you do pause, you can then swing down as hard as you want, and the ball will really jump off the clubface.



6. Towel Under The Arms - Connection & Vertical Centralized Swing
Sean Foley
If the towel stays in place, your hands, arms and shoulders are moving together.
"One of the misconceptions that has happened historically in golf instruction is how the body works and why it should work that way."
What I want to see is the hands and arms moving in sequence with the rotation of the upper torso. All three should move together as one unit until the left arm gets parallel to the ground--at that point the swing's momentum will keep the hands and arms on plane. This first part of the swing is crucial to staying in sync. Ingrain this feeling of everything moving together by stretching a towel across your chest with the ends under your armpits. Practice starting back while holding the towel in position (above).