Tom Brady announced that he is "retiring for good" in a social media post, ending one of the greatest careers in NFL history after 23 seasons.
Brady, 45, retires as a seven-time champion and the all-time passing leader, setting marks that will be difficult to break.
After the announcement, football fans, media and athletes from around the world took to social media to thank Brady for his many years of greatness.
Here are some of the many reactions.
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