Eagles defensive end Michael Bennett, a frequent protestor a year ago when he played for the Seattle Seahawks, walked out of the tunnel as the anthem played.
The anthem will continue to be played before every game, and all player and non-player personnel on the field at the time are expected to stand during the presentation of the flag and performance of the anthem.
Dolphins defensive end Robert Quinn (94) raises his right fist during the singing of the national anthem on Thursday. Cornerback Jalen Ramsey, linebacker Telvin Smith, and running backs Leonard Fournette and T.J. Yeldon joined teammates on the sideline after the anthem.
The NFL says it's anthem policy is on hold while it holds discussions with the NFL Players Association.
First day of second Test between England and India abandoned at Lord's
It is the first time a whole Test match day has been lost to the weather at the home of cricket since May 2001, against Pakistan. A 20-year-old Oliver Pope earned his maiden call-up and is most likely to play ahead of Dawid Malan in the second Test.
Ex-49ers quarterback Colin Kaepernick was the first to protest in 2016. The NFL said in May that players had to stand at attention or stay in the locker room, with teams facing fines and individual players subject to team penalties.
None of these players should face disciplinary action. Defensive end Michael Bennett, who kneeled during the anthem when he played in Seattle, walked out of the tunnel late, with security director Dom DiSandro, then spent the rest of the anthem trudging toward the bench. The growing popularity of the peaceful protest particularly angered President Donald Trump, who said the act was unpatriotic and called for participating players to be fired.
Jenkins had stopped that practice during last season, after the National Football League owners made a financial commitment to the Players Coalition, a charity endeavor he co-founded to help end social injustice in this country.
"Meanwhile, there has been no change in the NFL's policy regarding the national anthem".