Sports Reference, LLC is a company which operates several sports-related websites including Baseball-Reference.com, Pro-Football-Reference.com, Basketball Reference, and Hockey Reference.[1] The site also includes sections on college football, college basketball and, until December 2016, the Olympics.[2] The sites attempt a comprehensive approach to sports data. For example, Baseball-Reference.com contains more than 100,000 box scores and Pro-Football-Reference.com contains data on every scoring play in the National Football League since 1941.[1]