Conor McGregor quickly deleted a tweet about Tom Brady to correct himself about the now-retired NFL legend's ancestry.
Brady, 45, announced his retirement from American football on Tuesday a year to the exact day that he first decided to retire, making a U-turn on his decision six weeks later. The record seven-time Super Bowl winner ended his career with the Tampa Bay Buccaneers, with the Bucs losing out in their play-off game to the Dallas Cowboys last month.
McGregor congratulated Brady on his illustrious career by tweeting: "No finer American Irish football legend! I know the next chapter will continue your winning streak-Sláinte!" The UFC star quickly removed the tweet and reworded it "Irish American football legend", as Brady's father Thomas Brady Sr. is of Irish descent.