This article does not cite any sources. (August 2016) (Learn how and when to remove this template message)
An outswinger is bowled by holding the cricket ball with the seam at an angle and the first two fingers running along either side of the seam. The ball must be released at 12 o'clock height. The hands should move slightly towards the left at follow through and must push down for more back-spin. Once the ball has worn on one side the shiny side should face the leg side and the seam towards first or second slip for swing. The difference of pressure caused by movement of air over the rough and smooth surfaces tends to push the ball to the left. The result is that the ball curves, or swings to the left. In case of a new ball point the seam to the direction of swing. The difference of the separation of air by the seam the ball moves away from the batsman.
From a right-handed batsman's point of view, the swing is away from his body towards his right, i.e. towards the off side. This swing away from the body is the source of the name outswinger. To a left-handed batsman, the swing is in towards the body and towards the leg side which from a technical point of view makes the outswinger, now an inswinger.
Outswingers may be considered to be one of the more difficult fast deliveries for a right-handed batsman to play. This is because the ball moves away from his body. This means that any miscalculation can result in an outside edge off the bat and a catch going to the wicket-keeper or slips fielders.
To a right-handed batsman, a fast bowler will generally concentrate on bowling repeated outswingers, aiming to tempt the batsman to play away from his body and get him out in one of the ways described above. However, sometimes a fast bowler may attempt to deceive the batsman by bowling an off cutter instead of a standard outswinger, and look to get a batsman out either bowled or lbw. More commonly, variation is in the length of the ball, with yorkers and bouncers. The most effective length is a goodish full length and off stump or fourth stump.