Bangladesh pacer Mustafizur Rahman sent back Ireland batsman Paul Stirling for a duck in the 2nd over in the fourth match of the Tri-Nation Series at Dublin (Malahide) on Friday.Earlier, Bangladesh captain Mashrafe Mortaza won the toss and opted to field first against the host.Bangladesh: Tamim Iqbal, Soumya Sarkar, Sabbir Rahman, Mushfiqur Rahim(w), Shakib Al Hasan, Mahmudullah, Mosaddek Hossain Saikat, Sunzamul Islam, Mashrafe Mortaza(c), Rubel Hossain and Mustafizur Rahman.Ireland: William Porterfield(c), Paul Stirling, Ed Joyce, Niall O’Brien(w), Andrew Balbirnie, Kevin O’Brien, Gary Wilson, George Dockrell, Barry McCarthy, Tim Murtagh and Peter Chase.