Without looking......

if you happened to stumble across this on ESPN, you're disqualified.

teams from IPFW and UC Irvine just met in a National Championship
game.

This was the NCAA's top weight class, mind you. This is no "Hobart wins 13th straight title" trick.

Previous champions include Penn State, BYU and USC.
clever readers will note that this hint does not exclude football.

so without looking, two questions:

what sport?

Who is IPFW?

extra credit: name both mascots. and then cite me a championship game ever in any sport with two more abstract ones.

Here's the answers.