I'm pretty sure Haralabob Voulgaris made quite a bit of money by finding refs who (presumably subconsciously) called certain games in certain ways that the oddsmakers weren't yet accounting for.

Virtually nobody besides successful gamblers and actual statisticians has any insight into what is actually going on. There's just too much noise and 99.9% of people aren't analyzing enough data to make any sense of it, assuming they're analyzing any at all and not just screaming when a call goes against them.