Several players on both the Ravens and Jaguars chose to kneel during the USA anthem but stood for the United Kingdom national anthem.
National Football League players are already taking a firm stance against Donald Trump.
Players from both teams stood during the playing of "God Save the Queen" with team members linking arms during the song.
Here's a quick survey: Note that all of the sideline shots show players and staff - including Jaguars owner Shahid Khan, in the fourth screengrab in this set - linking arms during the "Star Spangled Banner", while some players also knelt. Khan is one of several league owners to have contributed $1 million to Trump's inaugural committee. "Fire or suspend!" the president said in a Sunday morning tweet.
Kraft, who has previously called Trump a very good friend when the Patriots visited the White House in April, said in a statement: "There is no greater unifier in this country than sports, and unfortunately, nothing more divisive than politics". "Our players are intelligent, thoughtful, and care deeply about our community and I support their right to peacefully affect social change and raise awareness in a manner that they feel is impactful".