The title is taken from Iron Fist #1 (1975).
Detective Knight is talking to Colleen Wing reviewing their experiences in the series, and the police woman says - "Besides... 'Knight'... 'Wing'..., it's got a little... little ring to it". Comic book insiders will recognize that Nightwing was the name Dick Grayson took when he left his role as Batman's vigilante partner Robin, in rival comic books published by DC Comics.
Ward says he went to a school where he was taught rugby and that it's a sport one cares about. David Wenham, who played Ward's father Harold Meecham hails from Australia where rugby is one of the main sports (cricket is another).