Byrd was a southpaw who was losing by a lot until VItali quit with a torn rotator cuff, requiring surgery. Liston didn't get any surgery that I know of or ever specify what the problem was. Vitali fought and beat various Ali impersonators including Donald, Kirk Johnson, Kevin Johnson, Solis (on the night he fought VItali), and to a lessor extent, Adamek and Gomez. He also beat Sanders who had some of the fastest hands in the history of the division. He did well against the style.