Dimitar Rangelov signed a four year contract with Borussia Dortmund (a professional football team founded in 1909 that plays in the top tier of the German football system) with a transfer fee of 1 million , and in March 2010, he scored his first goal in the Bundesliga for Dortmund  in the win against Bayer Leverkusen.
His contract is for four years. On 16 June 2009, Rangelov officially signed his contract with Borussia Dortmund. It is best known for its men's professional football team, which plays in the Bundesliga, the top tier of the German football league system. Founded in 1909 by eighteen football players from Dortmund, the football team is part of a large membership-based sports club with more than 145,000 members, making Borussia Dortmund the second largest sports club by membership in Germany. The transfer fee was 1 million . On 20 March 2010, he scored his first goal in the Bundesliga for the Dortmund side in the 30 home win against Bayer Leverkusen. 
