Jonathan Tah headed a 90th-minute winner as Bayer Leverkusen came from behind twice to beat VfB Stuttgart 3-2 in a classy German Cup quarter-final on Tuesday and continue their unbeaten season run. Tah found the net at the far post off Florian Wirtz’ long cross, after Robert Andrich with a spectacular shot in the 50th and substitute Amine Adli in the 66th had scored their first two goals. Stuttgart had led twice, from captain Waldemar Anton’s header in the 11th, and from Chris Führich in the 58th following a risky pass from Leverkusen goalkeeper Matej Kovar who is only used in the Cup and had …