Alexis Sanchez had cancelled out Arjen Robben 's opener by converting the rebound from his own missed penalty .
Arsenal had two good chances to take the lead before the break , but Manuel Neuer saved shots from Granit Xhaka and Mesut Ozil .
Alexis Sanchez had cancelled out Arjen Robben 's opener by converting the rebound from his own missed penalty and Arsenal had two good chances to take the lead before the break , but Manuel Neuer saved shots from Granit Xhaka and Mesut Ozil .