The fighters competing on Saturday’s UFC 315: Muhammad vs. Della Maddalena pay-per-view event will officially weigh-in on Friday morning in Montreal, Quebec, Canada.  The event is headlined by two world title bouts. In the main event, welterweight champion  Belal Muhammad puts his title on the line for the first time against No. 5 ranked  Jack Della Maddalena . In the co-main event, two-time women’s flyweight titleholder  Valentina Shevchenko faces No.