How long can Praveen last?

Disguise is paramount, and, as yet, the England batsmen, while negating Kumar to some extent by standing down the pitch (a more competent stumper than MS Dhoni would stop that soon enough), appear not yet to have broken the code of which way he is going to move the ball. Kumar does not noticeably telegraph his intention by a change of action which some, in going from side on to more open, do. Nor is there a discernibly different grip. Instead it comes from the wrist action: he works the ball as if attempting to force it round an obstacle mid-pitch.