Country's hottest stars had a long, hard week -- what with the sold-out concerts and 5-star hotels and all. It was only fair that they got a chance to unwind on Saturday, the official College GameDay, and enjoy a little football. Jason Aldean, Chris Young, Little Big Town, David Nail and more hit Twitter to tweet about their favorite football teams, and engage in a little friendly rivalry. While Ashton Shepherd seemed to be the only female country singer in the sports mix, she certainly made herself heard, as her tweets came out in all caps. UT, OU, Ole Miss, Auburn -- the list of games are endless once football starts. See who your favorite country stars are rooting for!