Dortmund experienced their worst season in 20 years, finishing in 13th place, although they managed to reach the DFB-Pokal final. Manager Thomas Doll resigned at the end of the season. He was replaced by Mainz coach Jürgen Klopp.
^Kovač was born in Berlin, Germany, but also qualified to represent Croatia internationally through his parents and made his international debut for Croatia in 1999.
^Gordon was born in Dortmund, Germany, but also qualifies to represent Jamaica internationally and would make his international debut for Jamaica in June 2013.
^Tyrała was born in Racibórz, Poland, but also qualified to represent Germany internationally and represented them at U-19 level before making his international debut for Poland in December 2008.
^Senesie was born in Koindu, Sierra Leone, but also qualified to represent Germany internationally and represented them at U-20 and U-21 level.
^Akgün was born in Bielefeld, Germany, but also qualified to represent Turkey internationally and represented them at U-17 level.