Country music star Blake Shelton will serve as the celebrity guest picker on ESPN's 'College GameDay' for Oklahoma's game against Tennessee on Saturday:

The College Gameday Guest Picker has been announced for the Tennessee vs Oklahoma game. The Tennessee Volunteers are on the road in Week of 4 of the College Football season as they head to Norman, Oklahoma to take on the Sooners.

Host Rece Davis will be joined at the desk by analysts Lee Corso, Herbstreit, Desmond Howard, Pat McAfee and Nick Saban . College football insider Pete Thamel, college football betting analyst ‘Stanford Steve’ Coughlin and reporters Jen Lada and Jess Sims round out the “GameDay” cast.