In a Bundesliga match against Bayern Munich , Dortmund 's goalkeeper Jens Lehmann was sent off in the second half for a second yellow card .
Dortmund had already used Dortmund 's three substitutions .
In a Bundesliga match against Bayern Munich , Dortmund 's goalkeeper Jens Lehmann was sent off in the second half for a second yellow card , and Dortmund had already used their three substitutions .