During the latter third of the 19th century, Chicago established itself as a world class city. It was becoming a world class baseball city too with the White Sox joining the Cubs in town. A rivalry was sparked instantly between Owners James Hart and Charles Comiskey, making an eventual competition between the two teams inevitable. John McMurray, the chair of SABR's Deadball Era Committee joins this week's show to talk about the formation of the AL and the start of city series all around baseball.