St. Rita setter Mike Long dished 23 assists as the Mustangs downed Marian Catholic 25-10, 25-18.
Aidan Mitchell led the attack with seven kills, while Liam Kelly, Tim Carroll and Sean Coughlan had six kills apiece for the fifth-seeded Mustangs (21-14).
Senior Mike Long (33) with teammates on Senior Night
"It would mean everything to us to win a regional," Long said. "When our year started, we set out with a goal to with the Catholic League and to win a regional. We completed our first goal. Now we're in the position to win it."
Next up for St. Rita Volleyball is the IHSA Regional Championship Game vs. Stagg at Marian Catholic at 6:00 p.m. on Wednesday, May 25, 2016