I don't know enough about the NFL draft to doubt there's been a kid drafted at 19 so there's no reason to question that.
I do know enough about the SEC to see Arkansas and wonder if you've got the right college team. Off the top of my head, Bequette and Jamaal Anderson come to mind for defensive linemen that Arkansas had drafted. In fact, I'd be willing to bet there's been 3X as many offensive guys drafted from Arkansas than defense. There's certainly not a lot of lineman.
You've piqued my curiosity—who are you talking about?