I am hearing nowadays,'who can teach Sachin how to bat' But our players do need advice from someone coach/former players on adjusting their playing styles, minimizing the flaws in their batting/bowling/fielding ,or ,u can put it as 'chinks in their armour' No player,even in international cricket is technically perfect.e.gSome prolific scorers are very much susceptible against left arm pacers ,some struggle against short pitched stuff ,some against leg spin and so on In recent times,even Sachin has got bowled out in a similar fashion like in the SL game This is a very good article that goes into the 'cricket' aspect of cricket