Five of baseball's top executives have signed this Official National League baseball (NRMT) sometime following their reign as Commissioner (with the exception of Giamatti, whose name still was a fixture upon sphere's such as this one and Vincent). Fay Vincent, Bowie Kuhn, Peter Ueberroth, Happy Chandler, and the aforementioned Bart Giamatti have each penned their autograph in either ballpoint or felt tip ink that collectively grades an "8" out of possible "10". LOA.