The NFL Players Association wants daily COVID-19 testing for fully vaccinated players.
The league and the union agreed last week to update protocols so vaccinated players would be tested weekly instead of every 14 days as they were during training camp.
That's not enough, according to NFLPA president and Cleveland Browns center JC Tretter.
"Since the beginning of training camp, we have been testing our vaccinated players once every 14 days. It has been ineffective as we've had significantly more incidents of transmission inside the building this year than last year," Tretter wrote in a column on the union's website.