Backspinner, or Teesra
One common variation bowled by finger spinners is the backspinner, currently being rebranded the teesra. This ball is usually bowled slightly quicker than the orthodox off-spin delivery, with the fingers rolling down the back of the ball at release instead of down the side. The backspin makes the flight of the ball hard to judge, and may make the ball keep low. This delivery is entirely analogous to the wristspinner's slider.
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 delivery was renamed in the Indian Cricket League by Saqlain Mushtaq. At that time Saqlain played for the Lahore Badshahs. The first person to face the teesra or Jalebi was Russel Arnold of Sri Lanka when he was correctly given LBW by the umpire. He was also the first person to get out at the hands of the teesra as well. He got out the fourth time a teesra had ever been bowled.
The delivery was invented on the basis that it acts like a slider (which is used by a Leg-spinner) The delivery is held by an off-spinner in his normal action but instead of twisting the arm at the point of the delivery, the bowler simply rolls his fingers down the back of the ball. The delivery looks like it will turn a lot but it does not turn at all. This is a good way of deceiving the batsman that it will turn.
The name for the teesra was commonly used by Saqlain and that it originates from the first delivery the doosra because the doosra means the "other one" or "second one" in Urdu, Saqlain decided to call it the teesra meaning the "third one". The name Jalebi was introduced as soon as the delivery was bowled, many Indian commentators started using the name Jalebi. Jalebi is a sweet pastry commonly eaten in the sub-continent. However the name "backspinner" is by far the more common name that describes accurately the spin on the ball as it travels through the air.
So far this delivery has been used for well over a hundred years. But the recent bout of self-publicity involved has been pioneered by Saqlain and that he commonly used it against batmsan 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.
Read more about this topic: Finger Spin