Inducted in 2006, Warren Moon is the only African-American quarterback in the NFL Hall of Fame. His path to success was neither easy nor assured. As a seven-year-old growing up in Los Angeles, he lost his father to alcoholism and helped his single mom raise six sisters. Playing football as a kid, coaches questioned whether, because he was black, he had the smarts to play quarterback. Repeatedly asked to switch to another position, Moon refused, knowing...