Tony Mowbray’s side took an early lead when Ellis Simms headed them ahead in the 19th minute, yet Latics striker Will Keane equalised three minutes before half-time.
Ross Stewart then came off the bench to restore the visitors’ lead, converting a penalty after Patrick Roberts was fouled in the box.
Roberts then scored his third goal of the season to secure the victory, before a stunning strike from Amad made it four.
Here’s how Phil Smith rated each Sunderland player at the DW Stadium:
Roberts then scored his third goal of the season to secure the victory, before a stunning strike from Amad made it four.