is Mcgraw done a right decision of his retirement ?

That is the Australian way of saying goodbye to the game. Most of the Aussies when they retire, they seem to have at least one more good year left in them and generally prefer to retire on a high. It is very different in sub-continent, where players try to hang on 1-2 years after they are way past their best and that acts as a drag on the whole team. That is what is costing teams like India, Pakistan and to a lesser extent Sri Lanka and Bangladesh. Cheers! Ram