Konstantinos Karetsas, an 18-year-old Greece prospect, had to leave the field due to circulatory problems, as stated by the club. He passed the ball to a teammate then signaled his distress to the referee before sitting on the grass. Karetsas was treated laying down then taken away on a stretcher, with the score still at 0-0 at the time. The teenager was a marquee signing for Borussia Dortmund in the summer, joining from Genk for €30 million. Dortmund goalkeeper Gregor Kobel expressed his hopes for Karetsas' speedy recovery, saying "I hope and I think that everything is OK and I hope that he's back and fit with us soon."