Football Metadata

As I have currently been spending a great deal of time staring at pictures of football and indexing these images and arranging metadata about them, it got me thinking. I know many sports fans have game updates sent to their phones when they can’t watch a game. It got me wondering about the metadata used in such events. I assume a text is sent every time a team scores and at other pivotal points. Would the metadata include the players name and team number? Is that information governed by metadata schemas created by the leagues such as NFL or by the phone and distribution companies? Are these updates streamed on various television channels websites such as ESPN and is the metadata schema visible there? I don’t know how it would work, but it makes me curious.