Slagelse Boldklub & Idrætsforening, commonly known as Slagelse B&I, is an association football club based in Slagelse, Denmark, that competes in the Denmark Series, the fifth tier of the Danish football league system. Founded in 1887, making it the fifth oldest club in the country, it is affiliated to DBU Zealand. The team plays its home matches at Slagelse Stadium, which has a capacity of 10,000. Between 2008 and 2015, the club's first team went under the name of FC Vestsjælland. History The original club, Slagelse Boldklub, was formed on 23 May 1887, originally featuring cricket and later also association football. On 27 August 1919, it merged with Slagelse Idræts-Forening (founded 29 January 1907 at a meeting in the then "Schweitzer-Kaféen" on Schweizerpladsen with exclusively athletics on the program) under the current club name, Slagelse Boldklub & Idrætsforening (Slagelse B&I), but the new joint board decided to keep the founding date of Slagelse Boldklub. Slagelse Boldklub, which had always been a member of the Danish Football Association (DBU), was involved in the formation of the local association Sjællands Boldspil-Union (SBU) in 1902, where the club's then chairman joined its first board. After being represented in SBU's then Mesterrække since the 1931–32 season, the team managed to win the division in the 1937–38 season after two play-off matches in a local showdown against Western Zealand neighbours from Korsør Boldklub (rematch due to the same points; the series did not include goal difference yet). Thus, Slagelse secured promotion to nationwide divisions of the DBU for the first time in the club's history. The Slagelse club made its first appearance in DBU's tournaments in the East group of the third-tier 3rd Series in the 1938–39 season, when Bornholm based IK Viking Rønne was defeated 6–0 at home on 21 August 1938. In the following years, the team reached promotion to the Danish top flight. During the German occupation of Denmark in World War II, Slagelse B&I were placed District 2 of DBU's emergency tournament for the Danish Championship, where they participated in the seasons 1941–42, 1942–43, 1943–44 and 1944–45. The best result during this period was an overall second place in their district, only ending behind the undefeated KFUMs Boldklub from Copenhagen in first place in the 1943–44 season, which sent the team on to the quarterfinals in the championship sround, where they lost 11–1 to the later Danish champions from Boldklubben Frem.