I remember Tamim Iqbal looking an absolute superstar in the making back in 2010 - he was flaying the Indian and English attacks around in Test matches with real class. Four years later and his form has disintegrated to the point where his captain is having to justify his spot in the weakest batting line-up in the game (except Zimbabwe). What happened? Did the player lose interest or is it a failing of the Bangladeshi coaching system?