Sharks coach Craig Fitzgibbon has named an unchanged team for this week's Easter Sunday showdown with the Knights in Newcastle.

It's do or die for Cronulla's Lisa Fiaola team when they face Wests Tigers at Leichhardt Oval on Saturday morning with a preliminary final berth on the line.

After stirring wins against the Warriors, the Jersey Flegg Sharks and Newtown Jets will tackle the Knights as part of a pulsating Easter Sunday triple-header at McDonald Jones Stadium.