Pakistan thrashed Bangladesh by 55 runs on Wednesday in their opening match of cricket’s World Twenty20, with skipper Shahid Afridi starring with bat and ball at Kolkata’s Eden Gardens stadium.Afridi scored a blistering 49 off just 19 balls in Pakistan’s commanding total of 201 for five before then taking two wickets, including that of danger man Tamim Iqbal, as Bangladesh made 146 for six in their 20 overs.