 In rugby league, props are physically big, straight running forwards whose job it is to set the platform and get the go forward while still possessing agility and good ball handling skills.Locks in union tend to be very tall and high jumpers, as this helps at line-outs; while as this is not a necessity for league; the two second rowers and the loose forward / lock are mobile with speed across the park who can off-load on attack and contain and enforce on defence.They are similar to the loose forward trio of flankers and number eight in rugby union.