MLB players must wear Kinexon contract tracing devices at the

Why Detroit Lions are still in team facility after COVID-19 positive

Boston Red Sox pitcher Matt Barnes tests positive for COVID-19, multiple other players in contact tracing protocols

MLB Players to Wear Electronic Tracers, Face Discipline – NBC Los Angeles

Column: Will COVID-19 protocols impact fun at spring training?

MLB players must wear Kinexon contract tracing devices at the start of spring training — or face discipline. And they are encouraged to get the COVID-19 vaccine. – The Morning Call

Health and safety protocols for 2021 MLB season

NFL used tracking tags to keep COVID from derailing season - Los Angeles Times

MLB players must wear Kinexon contract tracing devices at the start of spring training — or face discipline. And they are encouraged to get the COVID-19 vaccine. – The Morning Call

MLB's new COVID-19 protocols stricter – and could result in suspension