 The reduction in the importance of the scrum and the removal of the line-out from rugby league, has meant it is a faster free flowing game.Very different skill sets and body types needed for the different positions has become more obvious as union players specialise more.For instance, props and hookers in rugby union tend to be among the physically strongest and heaviest players with high levels of scrummaging and mauling skills, but traditionally with limited speed and ball-handling skills.