The Penrith rugby league captain Kevin Kingston his side's surprise win over defending National Rugby League champions Melbourne will count for little if they can't back it up against the Warriors tonight.
The Panthers produced the upset of the season when they beat the Storm 12-10.
The Warriors, who're second to last in the competition, will hope Penrith repeat the form they had after a big win over Parramatta in round seven was followed up by a 30-6 loss to the Sydney Roosters.