The 1890 National League of Baseball of Great Britain was the first, and to date only, professional baseball championship for the national baseball title of Great Britain. The National League's headquarters were located at 38 Holborn Viaduct, London.[1] Aston Villa were the National League champions, despite Derby Baseball Club leading the league for much of the season, following their contentious dismissal from the championship, mid-season. Aston Villa were officially known as Birmingham Baseball Club Limited, with their uniforms emblazoned with ‘Birmingham AV’ on the jersey, despite being officially part of the famous football club. As a result, in some reports of the day, they were referred to as Birmingham. Preston Amateurs were the Amateur League champions, beating Birmingham Amateurs 43-15 and 42–7 in a best of three finals. A large number of leading football and cricket professionals of the era were involved, alongside American professional baseball players.