The document discusses the history of technology in sports from the 1920s to present day. It covers some of the earliest broadcasts of sports including the first radio broadcast of a football game in 1920 and first televised baseball game in 1939. It also discusses important events like Jackie Robinson breaking the color barrier in MLB in 1947. The document then outlines several key innovations in sports broadcasting technology over the decades like instant replay in 1955, on-screen graphics in 1965, and the introduction of networks like ESPN and devices like the DVR that changed how fans experience sports.