Even though being invited to the NFL combine is most direct route to being drafted, it's not necessarily a prerequisite.
Len Pasquarelli of ESPN.com lists six guys that weren't invited who still might get drafted. Two of those six are SEC players -- Tennessee quarterback Jonathan Crompton and Florida linebacker Ryan Stamper.
Despite his inconsistency, Crompton has a chance to make it as a third quarterback on a roster, Pasquarelli writes. And even though Stamper doesn't have ideal size for a linebacker, he could be an immediate contributor on special teams.