A common grip problem occurs when the end of grip is too deep in your hand, the end of the grip digs into the heel pad of your left hand causing you not to have a secure hold on the grip. By not having a secure hold on the grip, the grip will move around during your swing causing the butt end of the grip to rub against the left heel pad of the glove causing wear.
Golf tip: Scooping caused by bad shaft direction
The other scenario is similar. Not maintaining a constant secure grip causes one to let go of the club, while re gripping during your swing. This usually occurs in the transition of your backswing to your downswing. This will also cause destruction to your glove, and may cause one to lose control of the clubface at impact.
Always Grip the Club With Your Fingers NOT in Your Palm:
Why Proper Grip Matters:
If you keep wearing out the leather in the heel pad of your golf glove, you're a prime candidate for wrist, elbow and shoulder injuries, says physical therapist Ralph Simpson, a Golf Digest fitness advisor. "What happens is that the golfer holds the club deep in the palm of the hand, and it rubs against the heel pad, eventually causing it to tear," Simpson says. Holding the club deep in the palm instead of in the fingers restricts the wrists' ability to hinge and unhinge during the swing.
The hands and arms are put under more stress, which can lead to issues like tendon and ligament tears or inflammation. Less common, but still a possibility, are ailments such as fractures of the wrist bones. "Check your grip often," Simpson says. "It's really easy to let it slip down into the palm.