Two goals from Ross Stewart put the hosts in control in the first half while Callum Doyle added a third five minutes before half-time.
Stewart then completed his hat-trick after the break before substitute Benji Kimpioka added a fifth with a neat finish.
Sunderland are now two points ahead of second-place Rotherham, although the Millers have a game in hand.
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Here’s how the game played out:
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RECAP: Sunderland 5 (Stewart, 13, 37, 57) (Doyle, 40) Kimpioka, 75) Sheffield Wednesday 0
Last updated: Thursday, 30 December, 2021, 22:51
- Sunderland XI: Hoffmann, Wright, Flanagan, Doyle, Gooch, Evans, Neil (Kimpioka, 70), Dajaku (Alves, 79), Embleton, Pritchard (Cirkin, 63), Stewart
- Subs: Burge, Alves, Cirkin, Younger, Hume, Harris, Kimpioka
- Sheffield Wednesday XI: Peacock-Farrell, Palmer, Dunkley (Brennan, 29), Johnson, Hunt, Wing, Dele-Bashiru (Corbeanu, 59), Bannan, Mendez-Laing, Paterson, Gregory (Adeniran, 76)
- Subs: Wildsmith, Brennan, Shodipo, Corbeanu, Adeniran, Sow, Berahino
90’ Embleton fires over
This could have been more than five.
Embleton fires over from inside the penalty area following a knock down from Alves.
The West Ham loanee has been playing as an attacking midfielder!
75’ GOAL!!!! KIMPIOKA!!!
It’s five!
It’s been so easy for Sunderland to play through a disjointed Wednesday side tonight.
This time the hosts worked the ball to Dajaku whose cross from the right found Kimpioka at the far post.
The forward had time to take a touch and side-foot the ball past Peacock-Farrell.
5-0!
70’ Kimpioka comes on
Kimpioka replaces Dan Neil.
‘Dan Neil, he’s one of our own’ chant the Sunderland fans.