The Blues are back at home today after four straight games on the road.
John Sheridans men are without a win in all those away games and three points at home is badly needed to kick start their challenge for the European spots.
Finn Harps are rock bottom of the league at the moment having taken up the mantle Cork City left behind.
A win for the Blues would move them up to 14 points in table.
Harps only win since the return of Irish football was against ST Pats in the FAI Cup and Waterford will be seeing this as a game where the win is well within reach.
Kick off at the RSC is at 2 o clock.