This occurs when the left hip laterally moves to the left without any rotation, the hips therefore outrace the golf club, leaving it behind with only the heel of the club being able to make contact. Once the heel gets to the ball, this generates a large amount of sidespin and the ball can only go right.
#2 The thin shot
Again the hips are leading the way on the downswing, but this time as they slide they force the left shoulder to pull up with them. Once that left shoulder pulls up, it takes everything up with it and the club is only able to make contact above the equator of the golf ball.
#3 The fat shot
We again have laterally moving hips leaving the club behind, but this time the hands want to do something about it! More often than not though, the hands will do too much and accelerate the club past the hands and cause either a fat shot with the irons or a scooped or skied shot with the woods.
#4 The pulled shot
This is the bad shot for most people that will actually feel the best but just go way to the left! It is those laterally sliding hips again outracing the club, but this time they move so far to the left that they leave the body and arms behind. The arms and hands then overdo it, literally whip around the body with a lot of acceleration with the toe racing past the heel of the club sending the ball straight left.