Four important rule changes for World Club Challenge clash as St Helens aim up to Penrith Panthers

FOLLOWING 'deadly' warnings about this weekend's weather in Penrith, there have been a set of rule changes introduced by the NRL for the World Club Challenge. With temperatures expected to rise to almost 40 degrees, it is not exactly conducive to playing fast-paced rugby league. As such there will be four new rule changes designed to combat t