B OULDER, Colo. — The thing about it was, nobody knew why. Nobody, apparently, could fully process such calamity.

The Sooners weren’t tough enough?

Nobody dared say.

They weren’t ready to play?

Maybe, but nobody was talking.

For the first time all season, Oklahoma was hit in the mouth. And once hit, well, everybody saw what happened in the second half.

It’s an old football cliché, but maybe it works. Not that any Sooner on his way out of the visiting locker room had put it together.

Juaquin Iglesias came closest, but all he said was this:

“We looked like a totally different team,” he said. “That didn’t look like us … No, that didn’t look like us.”

He might have said it again. Kind of like becoming trapped in an internal monologue, only out loud.

Why not?

For everything OU had done against North Texas and Miami and Utah State and Tulsa, Saturday afternoon at venerable yet charming Folsom Field was, for the Sooners, the antithesis of all that had come before.

Sam Bradford had been great. Against the Buffs, he was OK at best.

The receivers had been great. Against the Buffs, they dropped as many as they caught.

The offensive line had been magnificent. Against the Buffs, they sprung Allen Patrick for 56 first half yards on 10 carries, but not much else.