Catholic was led by the inside combination of Nick George and Zach Casto, who both posted double-doubles for the Irish.
Casto, a senior, led the way with 18 points and 13 rebounds, while George, a junior, tallied 17 points and grabbed 10 boards. The two helped Catholic enjoy a 36-16 rebounding advantage over the Titans.
"It's a nice 1-2 inside punch," McClanahan said. "They are complementary to each other. Nick is a little bit more finesse and Zach is a little bit more blue collar. Between the two of them, they have been getting the job done."
Casto has made the state tournament every season and is hoping to end his Irish career with another state title.
"It feels awesome," Casto said. "There always is a hunger inside of us to that ring. There are so many teams that just wish to make the state tournament. Our coaches have made that a standard."
McClanahan couldn't be happier for Casto.
"I'm pleased for Zach because he has worked hard to improve," McClanahan said. "He has waited his turn and done what he has needed to put himself in a position to be successful. Last year his role was limited and this year he is a vital part.
"He did that because he earned it. He deserves what he is getting. That's a good lesson for our younger guys and our program. You get what you deserve."