Place beef in slow cooker. Combine remainin ingredients, except rolls. Pour over meat. Cover and cook on LOW 8 to 9 hours. Refrigerate or prepare sandwiches now. Shred beef by pulling it apart with 2 forks. Add one cup sauce. Reheat mixture in microsave or on stovetop. Spoon on warm, open-face rolls or buns. Top with additional warm sauce if desired.