A doosra is a specific type of delivery by an off-spin bowler within the don of cricket. The doosra turns in the opposite direction to an off break (the off-spinner's default conveyance), and points to confuse the batsman into playing an unavoidable shot.
Who introduced it?
Pakistani popular off-spinner Saqlain Mushtaq invented Doosra in the 1990s. Other international bowlers who can bowl Doosra are Muttiah Muralitharan, Harbhajan Singh, Johan Botha, Shoaib Malik, and Saeed Ajmal. In spite of the fact that left-hand spinners too can bowl Doosra. Like England's left-arm spinners Monty Panesar and Moeen Ali utilize it once in a while. The Sri Lankan left-arm spinner, Rangana Herath, also bowls Doosra.
When Doosra wasn't invented, the spin bowlers utilize to confuse the batsman by bowling straight bowls apart from their mastery. Meaning a right-hand batsman playing against the right arm off-spinner utilize to anticipate a standard off-spin or a straight bowl. After Doosra was introduced, now the batsman is more confused since he is not sure where the bowl will be an off turn, a straight one, or a Doosra.
Technique:
The bowler conveys the ball with the same wrist activity by locking the wrist and utilizing the index and ring fingers rather than the usual index and middle fingers. This gives the ball turn within the inverse heading to that for an off-break, causing it to turn from the leg side to the offside to a right-handed batsman.
To make doosra more viable it ought to be pitched on the center and off stump line since the ball will move away from the batsman after pitching in case a right-hander is facing the ball. Be that as it may, On the off chance that there's a small additional turn within the wicket at that point a bowler might get to alter his line to center and leg stump. A capable doosra bowler often gives a flight to his ball welcoming a batsman to step out the wrinkle, though the last mentioned considers that it could be a convention off-spin ball and he clears out the safety of the crease and loses his wicket to stumping or just oversees to edge it to a defender inside the 30-yard circle.
Can a doosra be bowled legally?
A few say no, like Cricket Australia that chose the doosra will not be instructed in Australia.
I don't agree with this.
While I do agree it is inconceivably difficult, I will not be so self-important to say that it cannot be done. We too need to keep in mind that the flipper is insanely difficult as well and needs to break your shoulder, but numerous bowlers bowl it beautifully.
It's fair that the delivery has been created for decades and so there are kids bowling it from a youthful age and numerous coaches out there that instruct it. So, it's an incomprehensible delivery that has ended up a common delivery since all the research.
To just dismiss the doosra as impossible after it only being mainstream a few years isn't right.
Will a few bowlers break the rule while bowling it? Sure, yes. But that ought to not halt us from coaching kids from a young age to be able to bowl it legitimately. We don't ban driving for everybody because some people break the street rules.
Give young bowlers the correct coaching, back, and structure, and after that yes we will have doosra bowlers all over the place.