Future world heavyweight champion George Foreman, who sparred with Liston after Foreman's amateur career, assessed Liston's jab as the most formidable he faced and Liston as the strongest man he encountered in the ring, saying Liston also had the most natural talent and skill. Foreman stated "There wasn't anything missing from Sonny Liston. He had the whole package." While much has been written about the effectiveness of his left jab, others have commented favorably on Liston's wide range of boxing skills. These include Muhammad Ali who stated in a 1975 interview that he was a great admirer of Liston’s talents.