Sandy Koufax: A Lefty's Legacy is a 352-page trade paperback book written by Jane Leavy and published by HarperCollins in 2010. The book is a biography and autobiography of Sandy Koufax, a Jewish-American former professional baseball player. It covers his life, career, and legacy as one of the greatest pitchers in baseball history. The book explores Koufax's Jewish faith and how it influenced his life and career.