Maybe you know better than me, but I don't know believe he played on varsity as a freshman at Wooddale or whatever school it was. He had played football before, but I don't believe he'd played in a high school varsity game before Briarcrest. And I know for sure that he wasn't being scouted, and he wasn't known as a stud football player until after they had taken an interest in him.
No one was coming by Wooddale during his freshman year to see his talent.
Like I've said before, feel free to go out and pick up any 6-5, 300+ pound kid off the streets and adopt him. Even if he's already playing football, your odds of it being a D-1 athlete, much less a first round NFL draft pick are long. So if the Tuohy's were trying to adopt him strictly to get him to Ole Miss, then they hit the lottery. There are loads of kids his size playing football that never even make it to the D-1 level, much less start in the SEC, become an All-American and get drafted in the first round.