The days of superstar athletes being unwilling to speak their minds for fear of damaging their earnings or reputation appear to be at an end.

President Trump decided to take on some of the biggest names in pro sports on Friday and Saturday, including Stephen Curry of the Golden State Warriors. Unlike Michael Jordan, who famously did not want to offend anyone who might buy his signature sneakers, players around the country’s leagues have begun firing back.

Follow our live coverage of N.F.L. protests and reactions here.

Mr. Trump has found himself criticized by players in both the N.F.L. and N.B.A., with the focus on two specific areas: The protests of the national anthem at N.F.L. games, and the open question of whether or not the Warriors would visit the White House after their recent N.B.A. championship. Neither topic is particularly fresh, but with Mr. Trump urging N.F.L. owners to “fire” the protesting players, and tweeting that the Warriors were no longer invited for a visit, the embers on both issues have been thoroughly stoked.

Mr. Curry made some waves at the Warriors’ media day on Friday when he said of a potential White House visit: “I don’t want to go. That’s really it. That’s the nucleus of my belief.”