Goalkeeper Florian Kastenmeier was the hero as former champions Fortuna Düsseldorf overcame a late shock to reach the semi-finals of the German Cup for the first time in 28 years, 4-3 on penalties at St Pauli Hamburg on Tuesday. Düsseldorf seemed on course towards a 2-1 win from Ao Tanaka in the 99th minute, only for Carlo Boukhalfa’s header in extra time stoppage time sending the game into a deciding shoot-out. But Kastenmeier then saved penalties from Maurides and Marcel Hartel, who even got a second chance because Kastenmeier had left the goal-line, and Christos Tzolis won it for Düsseldorf…