Kaepernick gained national attention after the 49ers' third preseason game on Aug. 26 when he sat for the anthem. He was asked about it after the game and spoke about racial injustice in the country and said he was supporting those who were oppressed. He has since kneeled during the anthem in an attempt not to show disrespect to the country's military personnel. Other National Football League players have followed him, including at several season-opening games Sunday. Athletes in other sports have joined in, but none from baseball.