Panthers' Tetairoa McMillan Apologizes After Saying N-Word On Twitch Stream

Carolina Panthers wide receiver Tetairoa McMillan is spending his Thursday apologizing to fans after he used the n-word during a livestream ... saying "there's no excuse for what I said." McMillan issued the remorseful message on Instagram ... saying, "I sincerely apologize for speaking thoughtlessly and will do better." The first-year player was playing Madden in "The Streamer Bowl," a charity esports tournament…