Sunderland eased past fellow League One side Wigan to reach the last 16 of the Carabao Cup.
Nathan Broadhead gave the visitors the lead with a composed finish after drifting in off the left edge of the area.
Luke O'Nien slid home a measured effort after some neat passing to put the visitors in total control.
The Latics, who are above the Black Cats at the top of the table on goal difference, created little of note.
Unsurprisingly both teams made a large number of changes from the weekend action, with the home team making nine alterations to Sunderland's eight.