N.F.L. Teams Are Restricting Crowds. The Dallas Cowboys Want More. - The New York Times
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How NFL training camps will work in 2021 - Answering big questions around new COVID-19 protocols, rules for unvaccinated players - ESPN
Opinion: Want football this fall? Don't be selfish. Wear a mask to slow COVID-19 spread
Cowboys won't require proof of vaccination at AT&T Stadium, masks recommended for non-vaccinated
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