Neven Subotic, Borussia Dortmund’s Serbian defender who also holds an American passport, suffered a huge blow over the weekend when he tore the posterior cruciate ligamentand medial collateral ligament in his right knee in the 2-1 loss at Wolfsburg, leaving him unlikely to return before the end of the 2013/14 season. Greece international SokratisPapastathopoulos is expected to take Subotic’s place in Dortmund’s starting lineup while he is out.