Betting/gambling. Also talking shit to your friends in the pub which support the 'other' team (in a (friendly) banter).
I remember when I was betting (a lot) with Ladbrokes 15-20 years ago, I _loved_ statistics. But win/lose/draw was never my cup of tea. I would study the numbers and find teams who score/receive a lot and would bet on Over/Under. It didn't even have to be the 'premier' leagues. There were teams in Finland and Netherlands that would have an aggregate of 6-8 goals in most games. This was as certain as it could be. Low yield but steady yield. It just took time. I assume now with LLMs, one could write a prompt that would get an LLM to scour the interweb and give it "the games with over/under of x1.5 or more and teams that do so-and-so.. but.. who has time for that!