Finger spin
It refers to the technique and specific hand movements associated with imparting a particular direction of spin to the cricket ball.
If this supinated position is maintained through the release, the fingers will naturally cut down the side of the ball and produce a clockwise spin.
Although finger spin may be bowled with the same technique (albeit laterally inverted, as though viewed in a mirror) by both right and left handed bowlers, such bowlers are often discussed separately, as the direction in which the ball deviates as it bounces on the cricket pitch is different: For simplicity's sake, the rest of this article assumes a right-handed finger spinner bowling to a right-handed batsman.
With the advent of covered and better batting pitches the focus changed to bowling with a component of top spin.
Other bowlers have made considerable use of the doosra in international cricket, including Sri Lankan Muttiah Muralitharan, South African Johan Botha, India's Harbhajan Singh and the Pakistanis Shoaib Malik and Saeed Ajmal.
[4] The naming of the delivery is attributed to Moin Khan, the former Pakistani wicketkeeper, who would call on Mushtaq to bowl the "doosra" (the other one) from behind the stumps.
Tony Greig, a commentator in one of these matches, eventually linked the word to the delivery and confirmed it with Saqlain in a post-match interview.
[6] The bowler delivers the ball with the same finger action as a normal off break but cocks the wrist so that the back of the hand faces the batsman.
The doosra is the off-spinner's equivalent of the leg-spinner's googly, which spins in the opposite direction to the leg spinner's stock ball.
Though the delivery is known to date from at least the 1940s, it was re-introduced into mainstream international cricket in the late 2000s by Ajantha Mendis of Sri Lanka, Ravichandran Ashwin of India further popularised the carrom ball.
In either case, the bowler imparts the ball with top spin by twisting it with his or her fingers prior to delivery.
In cricketing terms, this means that the ball drops shorter, falls faster and bounces higher than might otherwise be anticipated by the batsman.
Tactically, a bowler will bowl topspinners to draw a batsman forward before using the dip and extra bounce to deceive them.
It is delivered with the arm tilted in such a way that the palm of the bowling hand is facing the sky at point of release.
The Teesra is a delivery recently made famous by renowned and innovative off-spinner Saqlain Mushtaq.
However upon closer inspection, the ball is simply an orthodox backspinner, a very common delivery that has been bowled by finger spinners as long as cricket has been played.
The first person to face the teesra or Jalebi was Russel Arnold of Sri Lanka when he was correctly given LBW by the umpire.
But the recent bout of self-publicity involved has been pioneered by Saqlain and that he commonly used it against batsman in the Indian Cricket League he currently uses the delivery in county cricket as well but has stated that the teesra is still a work in progress and that he wants to hone the delivery so that the batsman become even more confused about where the ball is going to spin and whether it will spin at all.
In comparison to the orthodox backspinner, the arm ball is less well disguised and easier to spot due to the visibly vertical seam orientation, but the extra swing involved more than makes up for this.
Sanath Jayasuriya, Ravindra Jadeja, Saqlain Mushtaq, Daniel Vettori and Mohammad Rafique use the arm ball to good effect.
