The UFC octagon is back at the UFC Apex in Las Vegas for tonight’s UFC Vegas 98 fight card. The event is headlined by a flyweight bout between top contender Brandon Royval and fifth-ranked Tatsuro Taira . Royval (16-7) enters the bout coming off a win over former two-time titleholder Brandon Moreno . The former title challenger has won four of his last five fights. Taira (16-0) brings with him an undefeated record. He last fought in January, defeating Alex Perez via TKO.  Start Times: Main Card begins at 7 p.m.