Auburn football coach Hugh Freeze is "really pleased" with Oklahoma transfer QB Jackson Arnold in the early going of preseason camp. Here's why.

It came after offensive coordinator Derrick Nix spoke with reporters on Monday, and broke down Auburn’s play-calling structure. Nix said he’s in charge of first downs and drive starters, quarterbacks coach Kent Austin does third downs and Freeze, "has the authority to overrule anything we say or do."

True freshman Omar Mabson impressed Coach Freeze with his performance during practice. Damari Alston and Jeremiah Cobb are dealing with injuries, impacting the competition. One week into fall camp, and the Auburn running back room is just as much a mystery as it was at the beginning.