Heisman Trophy winners are supposed to be seniors , and Barry Sanders is only a junior .
LEAD : Sanders in Absentia Heisman Trophy winners are supposed to need national television exposure , and Barry Sanders didnt have it .
Heisman Trophy winners are supposed to be seniors , and Barry Sanders   is only a junior .
LEAD : Sanders in Absentia Heisman Trophy winners are supposed to need national television exposure , and Barry Sanders didnt have it .