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. 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. Events 10 February - Morton Betts, honorary Secretary of the National League appeals to professional football clubs to form baseball clubs. 5 March - It is reported that the National League of Baseball of Great Britain has asked for A. G. Spalding to send several American professionals to the United Kingdom to be distributed across National League clubs. 6 March - William Sudell agrees to form a professional baseball club at Preston North End and Francis Ley agrees to form a professional baseball club for Derby from his Ley’s Recreation Club. Professional football clubs were chosen as ideal partners for new baseball clubs. It is suggested that a twelve club National League will be formed, with teams to be based at Wolverhampton, Liverpool, Accrington, Manchester, Bolton, Stoke and Birmingham. 22 March - A maximum salary of £15 per month, plus travel expenses, is offered to American professional baseball players to join National League clubs in the United Kingdom. 6 June - The first annual meeting of the National League of Baseball of Great Britain is held at the Queens Hotel, Birmingham, with the constitution being drawn up and agreed upon. The constitution broadly followed the rules and regulations of the American leagues. It is reported that ninety Baseball clubs now exist in the United Kingdom. Thomas Slaney (President) and Harry Lockett (Administrator) of the Stoke Baseball Club), Francis Ley (President of Derby Baseball Club, William McGregor (President of the Aston Villa Baseball Club) and James Allard on behalf of the absent William Sudell