Cronulla Sharks
Why they can: There's only upside for Craig Fitzgibbon's team, and what they've produced over the first half of the competition has already been rather impressive. Nicho Hynes has taken on chief play-maker responsibility with ease and Matt Moylan has produced his best and most-consistent run of football in many years.
Their back five are exceptional in both yardage and on attacking sets, and Blayke Brailey is this year's most improved player. Fitzgibbon himself will only get better as a coach as the season continues.
The Sharks are sitting strong in fourth place, but have so much more growing to do and so much more improvement in them. It feels like they are not yet what they will become.
Why they can't: After winning four games in a row from round 2 to round 5, the Sharks have struggled for consistency, alternating wins and losses.
The reintroduction of Wade Graham, a true warrior for the club, has been awkward because they don't look as dangerous without Teig Wilton's excellent line-running on the left edge and a hard call might need to be made if they're to aim as high as their talent demands.
Dale Finucane's head knocks should be of real concern, given his whole-hearted style and the Sharks have missed the hard edge he's provided in the middle. Might have a bit of a problem handling teams they're supposed to beat, given they were strong favourites in their past two losses, where they were ambushed by Brisbane and Canberra.
At the halfway point of the NRL season, Campo's Corner makes the case for and against any of the top eight sides winning the premiership.
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