Former Bellator MMA welterweight champion  Ben Askren will make his highly anticipated ONE FC debut next month in Singapore. Askren (12-0) will headline “ONE FC 15: Honor & Glory” against  Bakhtiyar Abbasov (11-2), promotion officials have announced. ONE FC 15 will take place May 30 at Singapore Indoor Stadium in Kallang, Singapore. The main card will stream via an online pay-per-view. Also on tap for the card is a lightweight bout between  Caros Fodor (8-4) and  Willy Ni (15-8), plus light heavyweights Jake Butler (3-1) vs.  Pane Haraki (3-2).