Off-Green Putting When a player elects to putt from off the green rather than chip. (She favored off-green putting because she lacked confidence in her chipping and pitching).

Offset A measure of the distance between the leading edge of the hosel and the leading edge of the clubface. (The added offset on his new irons helped reduce his slicing).

One-Piece Takeaway Sometimes called the "modern" takeaway, it describes the beginning of the backswing when the hands, arms and wrists move away from the ball, maintaining the same relationship they had at address. (Sam Snead is credited with developing the one-piece takeaway).

Open Clubface When, either at address or during the swing, the heel of the clubhead is leading the toe, causing the clubface to point to the side of the target. (An open clubface caused him to hit his approach shot to the side of the green.)

Open Grip Also referred to as a weak grip, it is when the hands are turned counter-clockwise on the club. (His open grip made it difficult for him to hook the ball).

Open Stance When the left or lead foot is pulled back farther from the target line than the rear or right foot. This stance generally helps promote a left-to-right ball flight. (Since she played from an open stance, it was easy for her to fade the ball around the large tree).

Open-to-Closed A description of the movement of the clubface when a player fans it open on the backswing and then closes it at impact. (When his timing was correct, his open-to-closed swing produced wonderful shots).

Outside-to-In A description of a swing path when the clubhead approaches the ball from outside the target line and then continues to the inside of that line following impact. (His outside-to-in swing path allowed him to hit his approach shot very near the pin, which was cut on the right side of the green.)