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Best signs from 'College GameDay' at Tennessee-Oklahoma

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Can No. 15 Oklahoma slow down the electric No. 6 Tennessee offense? (3:51)

The SEC Now crew loves what they are seeing from Nico Iamaleava and the Vols offense, but the Oklahoma defense might be the powerhouse that brings them back down to earth. (3:51)

The Week 4 festivities for "College GameDay" involve the Oklahoma Sooners welcoming the Tennessee Volunteers for the Sooners' first SEC matchup.

Tennessee has been in red-hot form to start the season, averaging a gaudy 63.66 points per game across its first three contests, with the highlight being a 51-10 flattening of the previously ranked NC State Wolfpack in Week 2. The Volunteers' torrid start currently ties the LSU Tigers' 2007 season for the longest streak of 40-point wins by an SEC team to begin a season in the AP poll era, according to ESPN Research.

Tennessee's toughest test yet will come on Saturday, though, as Oklahoma's résumé proves the Sooners are no slouch either. They haven't dominated early on like the Vols have, but they still boast wins over the Houston Cougars and Tulane Green Wave.

Here are the best signs from "College GameDay" in Norman, Oklahoma: