The hosts have conceded 30 unanswered points, 24 of which came after the break.
Coach Stephen Kearney says after leading 10-2 in the first half, he didn't see what followed coming.
He says his guys played really well in the first half and showed good effort.
The Manly Sea Eagles have overcome a halftime deficit to beat the North Queensland Cowboys 22-20.
The Cronulla Sharks have held off the Parramatta Eels 42-22.
NRL COVERAGE POWERED BY MACHINERY HOUSE - IN A LEAGUE OF THEIR OWN.