Cleveland Browns center and NFLPA President JC Tretter believes that the NFL is trying to shame players who have not received the COVID-19 vaccine by implementing a wristband system as training camps started leaguewide this week.

ESPN's Jake Trotter relayed quotes from Tretter, who spoke with reporters Thursday.

"It's a nonsensical idea. They say they need a differentiator between vaccinated and unvaccinated players. We already have a differentiator. The unvaccinated players need to wear masks. No other sports league uses any sort of scarlet marking or helmet decal or wristband, because they know it's not necessary and the teams know who's vaccinated, who's not vaccinated."

On July 16, Pro Football Talk's Mike Florio relayed a memo the NFL sent to all 32 teams mandating them to visually distinguish between fully vaccinated Tier 1 and Tier 2 employees at team's facilities and everyone else. Players fall into Tier 1.

“We recommend utilizing color coded wristbands or credentials, however clubs are free to implement other methods,” the memo said, per Florio.