In sports and gambling there, there is a (mistaken) belief that a player who is performing better than normal will continue to play well.
We humans sometimes fail to appreciate statistical independence — i.e. two events are independent when the occurrence of one doesn't change the probability of the other.
There have been several scientific experiments to document the "hot-hand" fallacy in basketball. A player could make several shots in a row, but their shooting percentage will eventually return to their long-term average. In finance, it's called mean reversion.
