The last 15 minutes saw a penalty miss, an equaliser and a red card for either side as Emre Mor was sent off for the hosts and goalscorer Valentin Stocker for the visitors
Pierre-Emerick Aubameyang had a penalty saved but then rescued a point for Borussia Dortmund as they set a new club record of 25 home games unbeaten in the Bundesliga with a 1-1 draw against Hertha Berlin.
Dortmund were far from their best at Signal Iduna Park and wasted chances before Aubameyang's late strike, sparing his blushes after he was thwarted by Rune Jarstein from the spot in a match that saw both sides reduced to 10 men.