Yeah they have been down. They were down last week for about a whole quarter length of time. They jumped up early in the first half on South to a 16-0 lead, then South came back and scored 17 points. Then, with about six minutes to go in the 4th Quarter Tennesse High scored two late touchdowns and won 31-17.
Tennessee normally doesn't worry about homefield advantage. They were calm and collected against East when everyone else was nervous. (Even though that game was at home there were about 6,500 fans there!)