How did Ajmal's action deteriorate so much that now all his deliveries are exceeding the 15 degrees level of tolerance permitted under the ICC regulations? Did it happen overnight or was it a gradual slide? How were the experts so convinced in 2009 and even in 2012 when there were slight murmurs over his action. Or has the technology improved drastically since then?
The ICC has been under pressure by the purists such as Ian Botham and Micheal Holding to rid the sport of dubious actions. From personal experience, Graeme Swann has been one of many who believe that it is ‘impossible' to deliver the Doosra without chucking the ball. But then Swann with his classical action could never bowl the Doosra, and many modern day off-spinners bowling the Doosra have adopted a front on action, like Ajmal's.