i beleive it is caused by which direction the face of the club is facing when u connect with the ball. what you must be doing is twisting your wrists when u swing causing the face of the club to be angled when you hit the ball. to practice really concentrate on keeping you wrists still when you swing to ensure contact is corrrct. dont try to hit it far just get the technique right first. i fint to practice put your front foot level with the ball rather than have the ball in the middle of your body. place the club so the face is facing where you want the ball to go. place the club just behind the ball and swing slowly to start with.

Your slice is caused either by an open clubface at impact or an outside-to-in swing path at impact, or both. While this is what is causing your slice, it is impossible to determine the best way for you to fix your slice without actually seeing your golf swing.

There are actually three different types of swings that will produce a slice. First, determine which ball flight best describes your usual shot. 1) You start the ball left and it begins to slice back to or past your target line. 2) You start the ball pretty much on the target line and then goes right. 3) Lastly, if you start the ball right and continues to go further right. All rights = lefts and lefts = rights for lefty golfers For # - 1) This means that you are swinging over the top (outside to in) with your body and trying to correct this move with your hands. Best Fix = You need to learn to attack the ball from the inside. So, when you have completed your swing to the top, you should then feel your back and shoulders start your downswing back towards the target and almost a slight drop in your hands as they simply trail your left shoulder and body through impact. 2) This is a common problem with players who don't trust that the club will get back to the ball. It is almost like you are casting (angle of the right wrist breaks down before impact, pushing the clubhead away from your body) to steer the ball rather than just hit it and most likely you would be finishing with much of your weight still on your back foot. Best Fix=Most likely your weight transfer resembles a reverse C (weight transfers forward instead of back on take away and then back instead of forward on follow through). Best Fix=There are two ways to fix this move. One is to concentrate on keeping your head practically still and behind the ball. Also, you should start your swing with no movement, except for a turn of your forward shoulder straight back from the target and on the target line. Your sternum (or center of your chest) should now be where your right shoulder started at address and facing away from the target. when you make this move, your body will start by moving back to the inside of the back foot to naturally adjust your center of gravity. Lastly, you should finish the same as #1. 3) With this ball flight, the main problem is either you are swinging like #2, but staying on your back foot the whole time. In which case, you should work on the same things as #2, except really concentrate on moving your front shoulder under your back shoulder (only your shoulder moves under, keep your chest level don't dip). The other problem you could have is getting in front of the ball with your weight before impact, which would cause you to block the ball (on your downswing your lower body actually prevents or "blocks" your shoulders and arms from getting back to the ball before impact. Best Fix-Concentrate on the downswing move in #1, but you should be thinking once you take the club away, the back side of your shoulder or the muscle that runs over your shoulder and starts down to the center of the back is what starts your downswing and this should over exaggerate the ever so slight dropping of the hands as they just trail your chest and shoulders back through the ball.

You have to understand what causes the ball to turn in flight. The spinning of the golf ball causes a difference in air pressure on oposite sides of the spinning ball. That is exaggerated by the dimples on the ball. As the ball spins the dimples create friction and a build up in air pressure. For example, if the center of the back of the ball is struct first, the bottom of the ball will spin forward and thus cause an increase in air pressure under the ball thus making the ball rise higher. However, if the club is swung outside in and the ball spins inside out, this spin will cause the ball to move outward instead of up. With a right handed person this will cause the ball to move left to right...a slice. Most techniques given to cure a slice essentially teach the person how to draw the ball or make it curve the other direction. After you learn to curve the ball left or right, it's a matter of practice.