Doosra
A doosra is a particular type of delivery by an off-spin bowler in the sport of cricket. The doosra spins in the opposite direction to an off break (the off-spinner's default delivery), and aims to confuse the batsman into playing an unavoidable shot.
Doosra means ’(the) second (one)’, or ’(the) other (one)’ in Hindi-Urdu.The delivery was invented by Pakistani domestic cricketer Prince Aslam Khan and popularised by Pakistani international cricketer Saqlain Mushtaq. A variety of bowlers have made considerable use of the doosra in international cricket.