It's very common in modern day rugby league for fullbacks, andbackline players in general,to come into the "engine room" andcreate the extra man in the front lineattack; in the hope of creating an overlap, among other reasons.
Who is widely regarded as the "pioneer" or "innovator" of this type of play?
'fan-baller
Note: I'll be absent from the boardsfor a few weeks and have passed on the answer to Reservoir Dog for confirmation.