The left-arm jinx is a mental one

After Kevin Pietersen was again dismissed by a left-arm spinner on the fourth day in Cardiff, Vic Marks' verdict, in the Guardian, is that he has developed a mental block. Pietersen tries too hard to dominate the left-arm spinners because he is aware people consider them his Achilles' heel, Marks writes.

My impression is that Pietersen is not really technically deficient against left-arm spinners but he has become unnerved by them, something he would vehemently deny. On the very brief evidence of Sunday there is one shot that he declines to play against them now, and that is the forward defensive.