Maybe I'm missing something but how come this went to court where all other pro sports cheating incidents are handled by the sports governing body. Was it amateur?

Most tournaments won't use hawkeye, so any close line call can be called/overruled by the ump. Plus they can choose to call things like foot faults at specific times when in reality they're happening really frequently without being called.

Why would they go to jail? What crime did they commit?