Kirk Herbstreit has updated his top 6 rankings following Week 6 play, and of course, the huge Texas A&M upset of Alabama, and Iowa’s late victory over Penn State.

But what appeared to impress the ESPN broadcaster more was Oklahoma’s win over Texas, as the Sooners benched Spencer Rattler in favor of freshman Caleb Williams.

Herbstreit pegged his top 6 teams as Georgia, Oklahoma, Iowa, Cincinnati, Ohio State and Alabama.

Georgia will get a test this week from fellow undefeated Kentucky, while Oklahoma gets a visit from unranked TCU, and Iowa will play host to Purdue. Cincinnati will play host to Central Florida.

Herbstreit should have plenty to say this week about Georgia as ESPN’s “College GameDay” will be in Athens ahead of the Kentucky game, which will be broadcast on CBS at 3:30 p.m. ET.