By the Guardian News

Why all the controversy over DRS during Pakistan-England Test series?

• There have been 37 lbws, a record for a three-match series
• Pietersen disputed his dismissal but Broad favours DRS

What is all the fuss about DRS?

DRS – players usually drop the U for umpire – stands for the decision review system, but this may be remembered as the decision review series: there have been 37 lbws, a record for a three-match series and six short of the record for a six-match series. A number of batsmen have been unhappy at being given out to balls that were barely kissing the stumps.

Such as Kevin Pietersen on Friday?

Yes. Pietersen was chuntering away to Andy Flower on the England balcony for some time after his dismissal by Abdur Rehman. He reviewed the lbw decision, but Hawk‑Eye indicated the ball was just shaving the leg bail, meaning the on-field decision stayed.

If the ball was hitting the stumps, why was Pietersen aggrieved?

He seemed to think the umpire was guessing, and there is an increasing sense that the old maxim – that the benefit of any doubt should go to the batsmen – is dying as DRS broadens both the minds of umpires and their perception of how wide and tall the stumps are.

Yet Stuart Broad defended DRS on Twitter on Friday night?

He did. He said "Players careers and whole Tests can rely on decisions, so surely u want a right decision? Too much pressure and money relying on human error now. Works in tennis, rugby, NFL, football crying out for it."

But yesterday he was DRSed himself

Yes, he was given out lbw on review, having originally been not out. Broad was a long way forward, but whereas in the World Cup you could be given not out if you were more than 2.5 metres down the pitch, you now have to be three metres.

Is there an easy solution for batsmen?

Use only the bat and not the pad, then DRS becomes an irrelevance, as Azhar Ali and Younus Khan showed. But it is difficult to teach an old batsman new tricks.