Can you believe it’s already week four of the college football season? It may feel like summer outside, but we’ve got ourselves a great week of fall football on our hands. Pigskin Preview presented by Prizepicks gets you ready for an eventful Saturday slate. All eyes will be on Norman when Oklahoma plays against its former National Championship-winning quarterback in its first-ever SEC game. Can Tennessee take care of business as a favorite on the road? We talk about all of the big games, including a Top 25 matchup on Friday night, and share our favorite picks for week four of the college foot…