Sheffield Wednesday have now made the joint-worst start after nine games in Championship history after Sunderland beat them 3-0 at Hillsborough on Friday night.
A Dan Ballard header and two Jack Clarke goals, one a penalty, had the Black Cats in cruise control before half-time.
Wednesday are a club in disarray off the field, with chairman Dejphon Chansiri releasing a statement earlier in the day stating he would be putting no additional money into the club.
Owls boss Xisco Munoz made two changes to the team that lost 3-0 at Swansea, with George Byers and Callum Paterson joining the starting XI.
Sunderland manager Tony Mowbray made just the one switch after the 1-0 defeat at home to Cardiff, with Patrick Roberts coming in for Abdoullah Ba.
The first two chances of the game brought goals for the away side.
First, Ballard rose highest to meet Alex Pritchard’s corner after five minutes and just three minutes later Sunderland doubled their advantage when Clarke drove towards goal from the left and arrowed a beauty into the bottom corner.
On-loan Wednesday man John Buckley had a go from outside the box but his effort was put past the post by goalkeeper Anthony Patterson, then Anthony Musaba chanced his arm moments later but saw his curling attempt fly over the bar.
The third goal came in the 31st minute after Bambo Diaby brought down Mason Burstow in the box. Clarke stepped up to send Devis Vasquez the wrong way – it was the Championship top scorer’s second of the night and seventh of the season, six of them coming away from the Stadium of Light.
Home fans who had not already headed for the exits chanted for both manager and chairman to leave the club.
In the second half, Pol Valentin made a mazy run down the right-hand side and his cross found Paterson, who saw his shot saved by keeper Patterson.
Jobe Bellingham nearly made it four but his effort from distance went just wide.
Despite bringing on forwards Ashley Fletcher and Djeidi Gassama in the closing stages, Sunderland comfortably dealt with the majority of Wednesday’s attacks for the remainder of the game, having done the damage in the first 30 minutes.
The result lifts the Wearsiders to fourth ahead of Saturday’s fixtures, while Wednesday remain bottom, with just two points from their opening nine games.
Southampton 3-1 West Brom (3-1 agg): Saints set up play-off final with Leeds United
Southampton saw off West Brom 3-1 at St Mary's on Friday to set up a Championship play-off final showdown with Leeds United.
Leeds thumped Norwich City 4-0 at Elland Road 24 hours earlier to book their place at Wembley, where Southampton now await on May 26.
The first leg between the Saints and West Brom finished goalless - just like the other semi-final - but the home side's quality told in the end.
Russell Martin's side dominated the first-half possession, with David Brooks going closest to scoring with a shot that hit the outside of the post.
Southampton made the breakthrough via a powerful Will Smallbone finish four minutes into the second half after Gray Diangana lost possession.
Darnell Furlong had a shot helped over by Alex McCarthy, while David Brooks - who assisted the opener - had a strong penalty appeal rejected.
Southampton remained in control, though, and Adam Armstrong scored a second with a shot through Furlong's legs and past Alex Palmer.
Armstrong's second goal arrived from the penalty spot in the 86th minute after Tom Fellows fouled Ryan Manning in the box, rendering Cedric Kipre's late header a mere consolation.
Al-Nassr 1-1 Al-Hilal: Mitrovic scores last-gasp penalty
Aleksandar Mitrovic scored a penalty in the 10th minute of second-half stoppage time as Al-Hilal denied Cristiano Ronaldo's Al-Nassr victory in a 1-1 draw.
Mitrovic netted his 27th Saudi Pro League goal of the campaign after Sadio Mane was harshly judged to have fouled Saud Abdulhamid in the area.
Mane stuck out an arm to shield the ball, catching his opponent in the throat, though the contact appeared to have been outside of the box.
Mitrovic made no mistake to keep Al-Hilal's unbeaten campaign going.
The Serbian's spot-kick cancelled out Otavio's first-minute opener, with Ronaldo having set up his compatriot.
Champions Al-Hilal remain 12 points clear of Al-Nassr at the summit of the Pro League standings.
Data Debrief: Ronaldo the provider
Ronaldo leads the scoring charts in Saudi Arabia this season, though he had to settle for an assist on Friday.
That came from the only chance he created, with the 39-year-old limited to 25 touches, though he did have four shots.
Leeds' belief never wavered as Wembley beckons
Ethan Ampadu said Leeds United's players never let their belief waver despite a poor end to their Championship campaign, with a trip to Wembley now coming up.
Leeds will face either Southampton or West Brom in the play-off final on May 26 after thrashing Norwich City 4-0 at Elland Road on Thursday.
The Whites endured a miserable end to their campaign, losing 4-0 at Queens Park Rangers before going down at home to Southampton on the final day, as Ipswich Town claimed automatic promotion behind Leicester City.
But after their emphatic defeat of the Canaries, who they drew with 0-0 in the first leg, Ampadu claimed Leeds never lost their way.
"Towards the end of the season there was a lot of talk about how we were playing, how we weren't on the front foot, how we weren't aggressive or clinical," he told Sky Sports.
"But we always had our belief that on our day, when we are firing, we can be hard for anyone to play against.
"When the front four, five, six play like that, they make the job of us defenders a lot easier.
"Whoever we play in the final it's going to be a hard game but to go in like this, to put in a performance like this, we can take momentum and confidence into it.
"The fans were second to none and we enjoyed their support – now we are going to prepare for the big one."
Georginio Rutter scored one and set up another in the rout, and he put the onus on Leeds to replicate the same level at Wembley.
"It's incredible. Today we go to Wembley," he said.
"We played a good game. I'm happy, everybody is happy. One more game and we will see.
"We played very good. 4-0 is a clean sheet. Today, we were mature. It's a very good performance from the team.
"I want to try my best and help the team. If we play like this [at the final], we have a good chance but we have to play like this."
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