Minnesota dominated the first set on the heavy arms of Wittman and Dixon. Wittman had five thunderous kills -- a few hammering off the heads of Radford players -- and Dixon added three kills and two service aces. The Gophers had 18 kills and hit .500 in the first set.
"We just go out there and try to play clean and ... in the first set we did a really good job," Dixon said.
Radford (25-10) made a short-lived run in the second set. The Highlanders brought the score to 11-11 at one point before Minnesota responded.
McCutcheon said he thought his team was frustrated in the second set.
"We tried to do some great things ... and we probably didn't need to stretch ourselves (that much)," he said. "I thought our athletes regained their composure ... and we felt like we had a little more control of what we were doing."
The Gophers left no doubt in the final set, jumping to a 16-2 lead due in large part to a seven-point scoring run with Daly Santana serving. Santana finished with five aces.
McCutcheon said Colorado will be a good test.
"(We) have to play with a lot of discipline and certainly come out with ... a lot of determination," he said. "It's going to be a good match. They're a good team."