Thorgan Hazard gave Gladbach a deserved lead at half - time , before second - half goals from Andre Hahn , Patrick Herrmann , Hazard again .
Ibrahima Traore finished off the Old Lady .
Thorgan Hazard gave Gladbach a deserved lead at half - time , before second - half goals from Andre Hahn , Patrick Herrmann , Hazard again and Ibrahima Traore finished off the Old Lady .