The part of the NFL combine you know -- the televised part, the stuff of which mock drafts are made -- is the so-called "Underwear Olympics." That's the part where dozens of draft-eligible prospects spend the week being weighed, measured, timed, interviewed and evaluated by NFL teams ahead of the draft.
But the reason we come to the combine is because the entire league does. Downtown Indianapolis is a beautifully concentrated ganglia of hotels, bars and restaurants in which, for a week every year, you can find just about every coach, general manager, assistant coach, assistant GM, scout, agent and so on.