I think what is not being properly explained here is that EVERYONE seems to be hitting off the white tees, which if I remember is the pro/tour pro tee box at StA.
Put a TL, who has been playing this game for a couple years with the best and longest equipment on white tees in an unlimited tournament and this is what will happen.
Besides the 2 par 5s on each nine that offer a legitimate eagle chance there are multiple par 4s that are short enough to reach off the white tee, for more eagle chances, then add that to the ability of some TL's to have their wedges so dialed in that holing out for eagle is not just an outside chance but a real possibility and you can start to fathom how guys can shoot low 50's.
Every time they do one of these kind of tournies the cheater whistles start to blow, however, its just not the case