N.F.L. players and owners, already on edge after critical statements made by President Trump at a rally on Friday night, woke up on game day to another series of tweets from the president, this time calling for football fans to boycott N.F.L. games unless the league fires or suspends players who refuse to stand for the national anthem. Stay here for live updates from around the league:
In a pointed rebuke of President Trump’s call for N.