The Canberra Raiders and North Queensland Cowboys have run out resounding winners in Friday night's double-header of Week 2 in the NRL pre-season challenge.

With so many fringe, reserve grade and jersey flegg players running around, it was tough to know exactly where to look or what to take out of either result, but there are still plenty of key talking points.

Here they are.

4. Jack Hetherington will be a good pick up for Melbourne

Jack Hetherington has long been a player with potential unable to realise it, with on-field discipline, injuries and a lack of form at the struggling Knights holding him back.

His move to Melbourne could unlock something though.

While he had limited minutes against the Raiders, it was possible to see he looked as fit as maybe he ever has, and also seemed to be more locked in than ever before.

Craig Bellamy has worked wonders with multiple players over the years, and just maybe it's time for him to do the same with Hetherington.

Able to play in the middle or on the edge, the aggressive forward could add plenty to Melbourne if he manages to crack the 19-man squad.