It is easy for guys like [Stuart] Broad and [Ben] Stokes who have been doing it for years. I don't think Shafiul [Islam] and Kamrul [Islam Rabbi] bowled that badly. (Collected from a national daily)

Consider those sentences and tell me why the writer has used square bracket in the name of those player? And Why not always first part of a name or second part? why sometimes first and sometimes second part?