Just minutes into the 2-0 win at VfB Stuttgart, Gio Reyna had to depart the pitch again in tears with a hamstring muscle and tendon problem. It is the latest in a series of injuries in what has become a season to forget - and one now brought to a premature close - for Borussia Dortmund’s 19-year-old US attacker. But Reyna has already demonstrated his ca- pacity for battling back from adversity - and he, his teammates and coach are united in the conviction he will soon do so again.