Updated: Apr 21, 2020
WHY BOWL FULL AND STRAIGHT
IF YOU BOWL SHORT AND WIDE…
IF you bowl short and/or wide, the batter can hit the ball to a large part of the field. You can’t put your fielders everywhere so it is very difficult to defend all the boundaries. The shots for balls which are short or wide (e.g. pull, cut) are also shots which are relatively easy to hit with power.
Even if the batter misses the ball, if the delivery is short or wide then it is unlikely to hit the stumps, so he /she can play their shots relatively safely. There is also the chance the umpire will decide the ball is a wide.
Short and/ or wide balls offer ‘free runs’ for the batter at low or no risk.
Because they can score boundaries frequently and because you are not attacking their stumps the batter is under no pressure.
IF YOU BOWL FULL AND STRAIGHT…
IF you bowl full and straight, the batter’s options are limited. He/ she can only defend or drive the ball to a small area of the field. You can put several fielders in this area and so defend both the boundaries as well as the singles.
If he/ she tries to hit it anywhere else or play anything other than an proper on-, straight- or off-drive then they are taking a risk because they will not be ‘playing straight’.
If they don’t play straight they are more likely to miss the ball and because you are bowling full and straight then if they do miss it, you will hit the stumps.
Because you are able stop the boundaries and also attack the stumps, the batter is under a lot of pressure.