Competition shows are filmed well before broadcast, so the outcome already exists — and it leaks through spoiler communities, contestant social activity, filming-location sightings and promotional edits. Markets on these outcomes trade as if the result were still undetermined. You track the leak channels, weight them by their historical accuracy, and take positions on results that are functionally already known to a small group.
Markets on Polymarket where reality-format & spoiler-leak trading is the natural play:
