Blacks Cats show they are a four-ce to be reckoned with
to the far post, leaving Stewart with a tap-in.
At the other end, Hoffmann had had very little to do but that changed just before the hour when he produced an excellent stop to deny Mandron.
But it was a rare chance for the hosts, and Sunderland added their fourth goal in the 73rd minute.
From a Crewe corner, Sunderland hit them on the break with McGeady playing the ball to Dajaku just inside his own half and he raced half the length of the field to get into the area on the left, and his powerfully-struck shot beat the keeper at his near post and found the bottom left-hand corner of the net.