We used to rely on "gut feelings" and old-school scouting reports to win games....

https://wiki-planet.win/index.php/From_the_Locker_Room_to_the_Felt:_Why_NFL_Stars_are_Betting_on_Poker

We used to rely on "gut feelings" and old-school scouting reports to win games. Now, it’s all about the numbers. Teams went from using zero advanced metrics in the early 2000s to a near-total reliance on data today