Memphis, Tenn.: Grizzlies edge Bulls 104-100 in preseason • Columbia, S.C.: Gamecocks upset No. 16 Florida 38-19 • Category 4 Hurricane Simon hugs Mexico coast with flood threat • Chattanooga, Tenn., Mocs smother Samford 19-3 in rain • Chattanooga, Tenn., braces for Isaias rain and winds •