Spin Bowling Variations: Doosra, Carrom Ball, and the Mysteries of Finger Spin
Modern spin bowling has produced extraordinary variations beyond the standard off-break and leg-break — the doosra, carrom ball, teesra, and flipper have all been designed to deceive batsmen expecting conventional spin. This guide explains each variation, how they are bowled, and why some are banned under ICC rules.
Spin bowling's power comes from surprise — a batsman reading a standard off-break prepares to play in one direction; a variation (a ball that goes the other way, or doesn't spin at all) breaks their preparation. The history of spin bowling innovation is a constant arms race: a new variation emerges, batsmen adapt, bowlers invent another. The doosra, carrom ball, teesra, and flipper are all products of this innovation race — each a different answer to the batsman's increasing ability to read conventional spin.
The Doosra
The doosra (Urdu for 'the other one' or 'the second one') is an off-spinner's delivery that turns the opposite way — from left to right for a right-handed batsman, like a leg-break — while maintaining the appearance of a normal off-break action. Saqlain Mushtaq (Pakistan) is credited with inventing the doosra in the 1990s; Muttiah Muralitharan later mastered it to devastating effect. The ICC has closely regulated the doosra because producing it with a completely straight arm is biomechanically very difficult — most bowlers hyper-extend their elbow slightly, potentially beyond the 15-degree legal limit for suspected throwing.
The Carrom Ball
The carrom ball is delivered by flicking the ball between the thumb and middle finger — like flicking a carrom board piece — rather than conventional finger-spin grip. The result is a delivery that can go in any direction from a neutral wrist position, making it very hard to read from the hand. Ajantha Mendis (Sri Lanka) mastered the carrom ball from around 2008, taking wickets rapidly before batsmen adapted. R Ashwin also uses a carrom ball variation. The carrom ball can be bowled by finger-spinners without the hyper-extension risk of the doosra.
The Teesra and Other Variants
The teesra (Urdu for 'the third one') was claimed by Saqlain Mushtaq as a third variant after the off-break and doosra — supposedly a delivery that skids straight on rather than spinning. Whether the teesra is a genuinely distinct delivery or simply a well-disguised straight delivery remains debated. The flipper (a backspin leg-spinner's delivery that skids on low rather than spinning up), the slider (a wrist-spinner's delivery that skids on rather than spinning), and the googly/wrong'un are all established variations with distinct bowled-by mechanics and distinct effects.
Frequently asked questions
What is a doosra in cricket?
The doosra is an off-spinner's variation that turns the opposite way from a standard off-break — spinning from left to right for a right-handed batsman, like a leg-break — while maintaining the appearance of a normal off-break action. Invented by Saqlain Mushtaq, the doosra is controversial because producing it without hyper-extending the elbow (beyond the 15-degree ICC limit) is biomechanically difficult.
What is a carrom ball in cricket?
The carrom ball is a spin bowling variation delivered by flicking the ball between the thumb and middle finger — resembling a carrom board piece being flicked. This neutral-wrist delivery can go in any direction, making it difficult for batsmen to read. Ajantha Mendis (Sri Lanka) and Ravichandran Ashwin (India) are the most famous carrom ball practitioners.
Is the doosra legal in cricket?
The doosra is legal if the bowler's elbow does not extend beyond 15 degrees during delivery (the ICC's standard for suspected throwing). However, many doosra bowlers have been reported for suspect actions because the delivery is biomechanically difficult to produce without elbow extension. Muttiah Muralitharan's doosra was tested and ruled legal due to his unusual natural shoulder configuration.