The club won promotion to the German Football League in 2010, and qualified for the semi finals of the play-offs the following year, its greatest success. Confronted with a debt of Euro 350,000, the club had its GFL licence withdrawn on 23 December 2011. The club's board consequently resigned and the Mavericks became defunct.
The Mönchengladbach Mavericks were formed in 1989. The Mavericks spent the first twenty years of their history in the local league system of North Rhine-Westphalia, never rising above the third tier.
The club's fortunes changed from 2007 onwards, when it introduced a new concept and new players, playing in the tier-four Oberliga NRW. After promotion from this league in 2008, the club also won the Regionalliga West in 2009, winning all ten league games, and overcame the Hamburg Blue Devils in two promotion games.
The Mavericks entered the German Football League 2, the second tier of the league system, for 2010. Achieving another unbeaten season in this league, the team was directly promoted to the GFL for 2011, the league having expanded from 12 to 14 teams.
The team followed up its 2010 success with an excellent 2011 season, finishing second in the GFL North and qualifying for the play-offs, where they were knocked out in the semi finals by Schwäbisch Hall Unicorns after defeating the Stuttgart Scorpions in the quarter finals.