I spent 11 years in press boxes watching the game change from gut feelings to...

https://wiki-stock.win/index.php/The_Spin_Cycle:_Why_Your_Favorite_Pitcher_is_Obsessed_with_RPMs

I spent 11 years in press boxes watching the game change from gut feelings to hard numbers. We went from guessing why a hitter struggled to measuring his exact exit velocity and spin rate with Statcast. It’s not just about nerds in back rooms anymore