GUWAHATI, Feb 27 - The quarterfinal line has been drawn in the 64th All India Police Hockey Championship being played at the Maulana Md Tayabulla Hockey Stadium here. In the pre-quarterfinal matches played today, BSF trounced West bengal 6-0, Maharashtra outplayed Manipur 7-0, ITBP edged past Tamil Nadu 6-5 and CRPF defeated J&K 4-1.