Damage control
What bowlers do to survive in the shortest, cruellest format of the game

The game has changed a lot, but the yorker continues to be one of the more effective deliveries • Associated Press
For starters, bowlers have realised that only three lengths work in this format: yorkers, just short of good length, and bouncers. Only in the first couple of overs, when the ball is swinging and the batsmen are slightly guarded, can a bowler can get away with bowling any length other than the three mentioned above. In that early period one can try to pitch it up to the bat, hoping to take it away or bring it in to the batsman, but as soon as the ball loses its sheen, bowling full is considered criminal. Once the batsman has made up his mind to go on the offensive, it's mandatory to hit the desired length at will.
Another skill that most bowlers have tried to master is bowling the slower ball. Most bowlers practise different kinds of slower ones: from the back of the hand, the split-finger one, the traditional offcutter, and some like Sreesanth have even tried bowling proper legbreaks. But more than the variety it's the ability to bowl the delivery while under pressure, and disguise it, that make it work.
Stats suggest that the first and last balls of overs are the most expensive balls in Twenty20, and all bowlers now know the importance of starting and finishing an over strongly. The first and last balls, after all, make one-third of a bowler's quota in any format of the game. Starting an over strongly puts pressure on the batsman to do something out of ordinary in the remaining five balls, and finishing well reduces the pressure on the bowler bowling from the other end. That's what bowling in partnerships is all about, where both bowlers complement each other to create an impact.
Bowlers have made peace with the fact that they are going to be hit, and that acceptance has led them to devise different strategies. Instead of trying to stop batsmen from hitting, bowlers try and ensure that batsmen can hit only in the direction they want them to hit
This brings us to the importance of keeping yourself warm and loose through out the game. One can't afford to bowl a couple of warm-up balls to a fellow player because of the time constraints; you also can't afford to start the spell with a loosener. This is why bowlers, while standing at the boundary, bowl to their non-playing team-mates or support staff, who stand with a baseball glove on to assist them.
In other formats only a wicket-taking delivery and a maiden are considered good deliveries, but Twenty20 has widened the definition. A single conceded off a ball is considered as good as a dot-ball in most situations. Bowlers know this, and are seen giving singles after bowling a dot-ball or two.
Just like batsmen have their go-to shots, bowlers also master their go-to deliveries, which they rely on themselves to execute perfectly under pressure. They could be yorkers, bouncers or slower ones, which will bail them out in a tight situation.
Another interesting development is that bowlers have made peace with the fact that they are going to be hit, and that acceptance has led them to devise different strategies. Instead of trying to stop batsmen from hitting, bowlers try and ensure that batsmen can hit only in the direction they want them to hit. For example, if the bowler has set a heavy off-side field, he tries to bowl in areas from where he can't be hit towards the on side.
Former India opener Aakash Chopra is the author of Beyond the Blues, an account of the 2007-08 Ranji Trophy season. His website is here