This 30 x 40" painting is an original oil by sports artist Doo S. Oh, who has painted numerous athletes, sold "500 Home Run" paintings, and was the main artist for All American Collectibles. This original was signed in the 1990s by its consignor. The large Muhammad Ali signature has been signed in silver marker. This scene is based on the famous photo of the knockout of Sonny Liston by Ali. That photo made the cover of Sports Illustrated. A small chip in the painting is visible on the bottom row, third spectator in from the left, where the white canvas is revealed. JSA LOA.