Things change quickly in college football. A team’s stock fluctuates on a week-to-week basis.

Just eight days after suffering a shocking loss and seemingly tumbling out of the national championship picture, Oklahoma is back after Saturday’s 28-21 victory over Texas.

The college football landscape keeps shifting at an incredible rate and it’s getting harder to keep up. Last week five of the top 10 teams in the Associated Press Top 25 lost. Saturday, three more tumbled with Wisconsin, Florida and USC all suffering losses.

A quick glance at the current Top 25 reveals a head-scratching group.

• No. 1 LSU: The Tigers are the unanimous No. 1 team in the country. Most expected them to contend for a spot in the BCS title game. Saturday night’s victory over Florida solidified it.

• No. 2 California: The Bears haven’t been ranked this high since the 1950s.

• No. 3 Ohio State: Most forecasted a rebuilding season for the Buckeyes.

• No. 4 Boston College: The Eagles haven’t been ranked this high since Doug Flutie was the pride of the Northeast.

• No. 5 South Florida: The Bulls are in such uncharted territory there isn’t a map to follow.

Then there’s No. 6 OU.

After going into free fall after the Colorado loss, the Sooners have jumped right back into the national title picture with the victory in the Cotton Bowl.

The only problem is staying there. If ever there was a season where taking wins for granted was a futile exercise, this is it. For decades, college football fans have pleaded for a playoff. They’re experiencing a 14-week long version this season.

“It’s one way of looking at it,” OU coach Bob Stoops said Sunday. “That’s probably why there’s such great interest in great TV markets everywhere, too, everybody’s following it.”

The upsets that have occurred over the first six weeks have been unprecedented.

First there was Appalachian State toppling Michigan. Last week there was the upheaval in the top 10. Saturday night featured perhaps the biggest upset of the season. USC, then ranked No. 2 and a 40-point favorite, falling at home to lowly Stanford.