Borussia Dortmund set the record of a 10 - point halfway lead in 2010 .
The third - placed defending champions can only close the gap to 11 by winning at Hoffenheim on Sunday .
Borussia Dortmund set the record of a 10 - point halfway lead in 2010 , but the third - placed defending champions can only close the gap to 11 by winning at Hoffenheim on Sunday .