Borussia Dortmund missed the chance to restore their three-point cushion in second place in the Bundesliga after a 1-1 draw at home to Augsburg.
Marco Reus started and finished the 16th-minute counter-attack move which led to the hosts opening the scoring.
It was the first time the forward had scored in back-to-back league matches since April after only returning to action earlier this month having been sidelined for eight months with a knee ligament tear.
But despite dominating possession, Dortmund did not create many clear-cut chances.
They were made to pay 17 minutes from time when Kevin Danso was quickest to react to Roman Burki parrying his header from a corner to follow up and smash home from close range.
Dortmund second-half substitute Mamoud Dahoud still had a chance to win it four minutes from time, but planted his shot over when he should have hit the target.