In the Titans' three games since Donald Trump attacked NFL players who are protesting racial inequality and police mistreatment of minorities by not standing for the national anthem, Matthews has stayed in the locker room each time.
One NFL player says he will "be done playing football" if the league requires him to stand during the national anthem.
NFL owners will meet next week and potential new protocols for the national anthem are expected to be discussed.
Since President Trump's September 23 criticism of NFL players' national anthem protests, Matthews has vowed to continue kneeling until the President apologizes. Matthews previously refrained from protesting in respect of his brother, but after Trump's comments, he said his brother would understand his intentions going forward.
Once, the entire Titans team stayed in the locker room.
A former college teammate of Colin Kaepernick, the free agent quarterback who first began protesting injustice by kneeling during the anthem last season, Matthews has also donated $75,000 to less fortunate communities. "I fully stand with my brother Kap, and I plan to continue to do that". "Because when you do that you're kind of saluting the military, I think". "If you see wrong and don't say anything, that's wrong". 'Just shows you we still have a long way to go in this country, but I believe in this country and we'll eventually get it corrected.