My Alma mater. I lived on campus in 2010/ 2011. The never really locked the stadium up so I used to just walk through there on the way to class or to friend’s apartments.
I live in Cookeville, not too far away from the Boro. You can’t get onto the field at Tennessee Tech either, unless they leave the gate unlocked. But when they do there is usually campus police everywhere lol.
The easiest way to do it is go to the game with the freshman walk(can’t remember it was homecoming or first home game). Wait for the kids to crowd around and just sneak yourself in there. I did it as a Junior half drunk one time with some friends.