FILE - In this Dec. 8, 2019, file photo, Cleveland Browns center JC Tretter walks off the field after an NFL football game against the Cincinnati Bengals in Cleveland. NFLPA president JC Tretter warned players they have to "fight for necessary COVID-19 protections" and Malcolm Jenkins said "football is nonessential." With training camp less than a month away, some players are speaking out about concerns over playing football during a pandemic while others are ignoring medical advice and holding workouts with teammates. (AP Photo/David Richard, File) **FILE**
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