The Sweet 16 round begins tonight with games from the South and West brackets, televised beginning at 7 p.m. ET on CBS, with games shown by both CBS and TBS. To illustrate the exciting volatile of the NCAA tournament. This left half of the bracket, as this third round of games arrives, already has eliminated both No. 1 seeds — and both No. 2 seeds as well. In fact, the top seed remaining in this half of the bracket is West No. 3 seed Michigan, which plays No. 7 seed Texas A&M at 7:30 p