Originally Posted by cover drive man
Hate to sound ignorant here, but what is a doosra?
Effectively it's whatever each person defines it as. Unlike the Googly or the outswinger, it has no concrete definition.
The closest to something would be the fingerspinner's alternate delivery that turns in the opposite direction from the standard fingerspinner's break. But many insist on dubbing Murali's wrong-'un a Doosra as well, despite Murali being completely different to any other bowler so far to exist.
Either way, what a laughable thing for this set of coaches to do. "Ill-considered sanctimonious nonsense" just about sums it up. It is impossible for a delivery to be impossible to bowl legally, unless that delivery specifically involves straightening the elbow by more than 15 degrees. The Doosra is all about the wrist and fingers and if the elbow is forced straight in the course of the bowling action then it would indeed still be possible to bowl.