Borussia Dortmund 1-0 Koln: Beier's stoppage-time strike breaks visitors' hearts

Borussia Dortmund 1-0 Koln: Beier's Stoppage-Time Strike Borussia Dortmund snatched a dramatic 1-0 victory over Koln, thanks to substitute Maximilian Beier's last-gasp winner at Signal Idu…