|Belgian international Ann Wauters led the way for Ros Casares, with 28 points|
Ros Casares beat a familiar team on Wednesday night to reach the Spanish Liga Femenina Finals.
They will now take on the winner of the other Liga Femenina Semi-Final between rivals Perfumerias Avenida and Girona FC.
Perfumerias, who captured last year's EuroLeague Women title and also beat Ros in the 2012 Copa de la Reina (Spanish Cup), won Game 1 against Girona, 78-45.
Game 2 of that series is on Friday night.
Maya Moore was a late scratch from the game with a stomach illness but Ros prevailed without their American star.
Roberto Iniguez, the Ros Casares coach, said: "The team has the resources to overcome everything.
"Above all, we are a team and I think we're showing it.
"I'm happy because now we can rest after a tough game."
Anna Cruz poured in 20 points, corralled seven rebounds and came up with four steals in defeat for Rivas.