[2][3] The senior men's team was promoted to the nationwide professional league divisions, Danmarksturneringen i fodbold, for the first time in 2010, where they played in the Danish 2nd Division for five seasons with two 3rd place spots (2012–13 (east) and 2013–14 (west)) in the final table as their best overall achievements in the Danish football league system, before being relegated to the lower ranking amateur levels in 2015.
[20] Due to an increasing amount of discrepancies between the different outdoor and indoor departments, the sport association's football department decided to split from the sports club in 2003 and formed its own separate association football club at an extraordinary general assembly meeting on 15 March 2004 under the name Rishøj Boldklub.
[25] The first team managed to stay in the professional divisions for five seasons as a club with amateur status, before being relegated to Denmark Series in 2015.
[4][5][26] Due to the implementation of a new professional league structure, the size of the two Danish 2nd Divisions was reduced with 25 percent and the numbers of relegation spots were increased to eleven teams in the summer of 2015.
[27] In the following season, the East Zealandian football club reached the fourth proper round of the Danish Cup, where they eventually lost their round of 16-match against the Superliga-club, AGF Aarhus, played at Tingbjerg Idrætspark, away from their normal home ground, due to the lack of floodlights required for the television transmission of the cup match in the evening.
[10] At the same time a mandate was given for a proposed creation of a professional superstructure surrounding the first senior team, that would be financially independent from the rest of the club.
[26][35] The financial separation of the first team into an independent company would not become relevant before the club reached the professional leagues, necessary in order to sign binding football contracts with players in Denmark.
[26][35][10] The new name and the future proposed prospects for a professional superstructure coincided with the financial investment of the Danish comedian and actor, Andreas Bo Pedersen, who assumed a role as the club's new elite manager shortly after getting involved in March 2016, proclaiming an ambition of returning the club's first team to the 2nd Division within a three years time frame and in the long run focusing on building a large loyal fan base.
[34][26] The new manager, Morten Eskesen, was tasked with the mission of returning the club to the Danish 2nd Division within the original proclaimed three years time frame, and received permission to put together a new team from the ground up, replacing 10 players during the summer of 2017, primarily from Karlslunde IF, and naming the defender Henrik Volquardsen as the captain.
[31][29] The first six league matches since the rebranding was officially launched in July 2017, were all won, and the club finished the fall season of the 2017–18 Zealand Series (group 2) in second place.
[31][36] On 31 August 2017, after approximately a month's employment in the club and just having two matches played in the fall season, Morten Eskesen signed a new contract for a position as assistant manager with the Superliga-club Randers FC.
[42] Logos used in the history of the association football department/club: The person responsible for direction of the first senior team has traditionally been given the title of head coach/trainer.
Between 1 January 2012 and 1 July 2014, Jesper "Købmand" Pedersen was given the title of manager/sports director with the primary responsibility for e.g. tactical match team composition, playing strategy and training planning, while Jimmy Brinksby (1 January 2012 — 30 June 2013) and Thomas Skov (1 July 2013 — 30 June 2014) were given the title of first senior team coach/trainer and second in line under the manager.
1: League games only, not including championship, promotion and relegation play-offsN: The remaining part of the new club's first season was played under the name Øslemagle IF Fodbold.R1: The first team (SBU Serie 4, kreds ?)