I don't have an extensive knowledge of this but I know Jermaine Morgan was part of a state championship at Whitney Young. Or did you just mean freshman coming straight off of a championship?
Edit:
I don't think Jermaine Morgan did win state after all. I rechecked, he graduated in 2012, they were runners up in the 2010-2011 season so he would have been on that team. Whitney Young won state in the 2008-2009 season when Jermaine would have been a freshman, but I do not know if he was a member of their varsity team then, I kind of doubt it.
Sorry capecod.