Fast Bowling - Seam Bowling

Seam Bowling

Seam bowling is the act of using the seam of the ball to cause the ball to bounce in an unpredictable fashion when it hits the pitch. A good batsman will be able to predict where a ball is going to bounce and from that work out what height the ball will be when it reaches him or her. By generating variations in bounce, the bowler can make it more likely the batsman will make a mistake in his assessment of the ball and give away their wicket.

Seam deliveries can be bowled at any pace, but most specialist seamers bowl at medium, medium-fast or fast-medium pace. The basic technique of seam bowling is to employ the normal fast bowling or slower ball grip and to try to ensure that the seam remains upright until the ball hits the pitch. If the seam is upright and the ball is spinning around its horizontal axis, there is no appreciable Magnus effect and the ball will not move in the air. The seam of the ball is raised and will cause variations in bounce and movement if it is the first part of the ball to hit the pitch.

Seam bowlers can get a lot of help from certain types of pitches. Hard pitches that have a cracked or ridged surface are best for seam bowling since the hardness makes it easier to bounce the ball without losing speed while the uneven surface adds to the unpredictability of the bounce when the ball hits the pitch. This is known as variable bounce. On rare occasions a pitch which is extremely hard and uneven will be declared as too dangerous to play on since the batsman cannot predict the ball at all and they are likely to be hit on the body repeatedly as a result. Green pitches can also assist the seam bowler since the tiny tufts of grass represent an uneven surface although this is a mixed blessing since the green surface also slows the ball slightly. It is difficult for a seam bowler to be effective on a very flat and even-surfaced pitch (known as a flat track in cricket vernacular) and seamers usually resort to aggressive bowling tactics and/or bowling cutters on such surfaces.