Ali had been hospitalized for a respiratory issue June 2. At the time, a rep said he was in fair condition.
One of the greatest fighters in the history of boxing, Ali retired in 1981 after losing to Trevor Berbick in his 61st career bout.
Floyd Mayweather, the world’s richest boxer took to his IG page to pour tributes to his hero and inspiration. He wrote, ‘Today my heart goes out to a pioneer, a true legend, and a hero by all means! Not a day went by entering the gym that I didn’t think of you. Your charisma, your charm and above all, your class are all of the elements that will be greatly missed by myself and the world. You are someone that inspired me greatly throughout my boxing journey and words cannot express how great you were as a person! Thank you for everything you’ve done for Black America, in the the world of sports & entertainment and for the legacy you leave behind! My sincerest condolences to the Ali family!’