Algorithm is based on formula. Whether that is statistic measures or analysis measured. The popular NFL systems algorithm that we consume are no longer just stat driven. They are scenario and per play driven. Passer rating has all but been replaced by QBR as an example. PFF has created a quarter billion dollar company by feeding millennials their hunger for what they didn't see and that stats can't tell them.
My favorite new measure is win percentage. It helps determine a players motor and per play dominance.
