Peyton Manning is heading back to Knoxville.
The Tennessee legend and NFL Hall of Famer will serve as a celebrity guest picker for College GameDay on Saturday ahead of the Volunteers hosting Alabama in a crucial SEC showdown at 3:30 p.m. ET, per ESPN's Field Yates.
Both teams have started the season undefeated, with Alabama (6-0) ranked No. 3 overall by the Associated Press and Tennessee ranked No. 6. They are two of six ranked teams from the SEC, joining No. 1 Georgia (6-0), No. 9 Ole Miss (6-0), No. 16 Mississippi State (5-1) and No.