Marcel Halstenberg's last-gasp penalty saw RB Leipzig snatch a 2-1 victory over Augsburg in a nerve-shattering German Cup quarter-final tie on Tuesday.
After Alfred Finnbogason's equaliser had rescued Augsburg in injury time of normal time, Halstenberg restored the lead in injury time of extra time to send Leipzig into the first German Cup semi-final of their history.
The hosts held Leipzig at bay for long periods and looked dangerous themselves until a momentary lapse in concentration allowed Werner to break away and slot in the opener on 74 minutes.
Leipzig were left shellshocked, however, when Finnbogason snatched an equaliser four minutes into injury time. Yet it was Leipzig who had the last laugh in a jaw-dropping game, as Michael Gregoritsch's late handball in the box broke Augsburg hearts and gifted Leipzig victory.
"We are so frustrated because we were at least on the same level as Leipzig today," Augsburg coach Manuel Baum told Sky.
Leipzig will be joined in the last four by Hamburg, who beat Paderborn 2-0 earlier in the evening. Hamburg striker Pierre-Michel Lasogga continued his fine scoring form in the German Cup as he grabbed both goals to fire his side into the semi-finals for the first time in ten years.