Match ends, Sunderland 0, Southampton 4.
Sunderland 0-4 Southampton
Manolo Gabbiadini scored twice in his second Southampton appearance as his side beat Sunderland who missed the chance to move out of the relegation zone.
The Saints took the lead in the 30th minute when Gabbiadini converted from Ryan Bertrand's cross.
The Italian scored again seconds before the break with a brilliant turn and finish inside the penalty area.
Jason Denayer's own goal and Shane Long's simple finish late on gave the visitors a fully-deserved, comprehensive win.
Sunderland came into the game on the back of a stunning 4-0 win at Crystal Palace, but remain bottom of the table after managing just one shot on target, a tame 30-yard strike from Didier Ndong.
The win for Claude Puel's side is just their second in the Premier League since Christmas and their first points on the road in 2017.
- Reaction and the rest of Saturday's Premier League games
- Relive the action from the Stadium of Light
Familiar name haunts Sunderland
Gabbiadini is a name famous on Wearside with Marco Gabbiadini scoring 87 goals in 183 games between 1987 and 1992.
But it was Manolo - no relation to the former Sunderland man - who impressed in Southampton's fine victory.
The striker signed for £14m from Napoli in January and now has three goals for the club, following his debut goal against West Ham last week.
His first strike could be viewed as lucky with the ball coming off Sunderland centre-back Lamine Kone's head before deflecting into the net off Gabbiadini's forearm.
There was no doubt about the second however, which came at the end of an excellent team move.
The 25-year-old turned brilliantly in the area before an excellent right-footed finish beat Vito Mannone.
Dismal Sunderland miss opportunity
Sunderland were buoyed by their win last week but now must feel like they are back to square one.
David Moyes' side started the game bottom but would have gone 16th with a victory after relegation rivals Crystal Palace and Hull City both lost.
The Black Cats started relatively brightly in the game but had no answer when Southampton got into their stride.
Substitute Fabio Borini headed Sunderland's best chance wide late on but the hosts failed to provide any service to top scorer Jermain Defoe, who did not have a shot in the 90 minutes.
"This is a game gone and the games are running out. We have to win some if we have a hope of staying up, simple as that," Moyes said afterwards.
Pressure lifted from Puel
On Thursday, Saints boss Puel said the team were "angry" at recent results after six league defeats from seven matches.
The Frenchman's side responded however with a fine confidence-boosting performance with the EFL Cup final against Manchester United just two weeks away.
Long and Gabbiadini both missed good chances with the score at 2-0 before the late goals rounded off the win.
Gabbiadini starred with two goals but Oriol Romeu was also excellent in midfield.
The former Chelsea and Barcelona man had more touches (91) and completed more passes (72) than any other player and also made six interceptions and won seven aerial duels.
'We made mistakes' - manager reaction
Sunderland manager David Moyes: "We didn't play well, not as well as last week. We made some defensive mistakes.
"We had a great chance to maybe move out of the bottom three had the games gone for us, but unfortunately it didn't fall for us. Southampton themselves had fragile confidence, but they got a goal off their centre-forward's arm.
"We played OK without creating too many clear-cut opportunities, and the more attacking changes we made the worse we became."
Southampton manager Claude Puel: "Today, first of all, was about the clean sheet. We showed a very good spirit and attitude in a difficult game. A good team performance showing plenty of confidence and quality.
"Manolo Gabbiadini is a technical player of quality who can finish well. It's great for us, and as a team it's now important to continue this work."
Man of the match - Manolo Gabbiadini
Gabbiadini matches Zlatan - the best stats
- Manolo Gabbiadini became the 16th player to score three goals in his first two Premier League appearances, and the first since Zlatan Ibrahimovic in August.
- The Italian was also just the second Southampton player to score in his first two Premier League games for the club, after Henri Camara in February 2005.
- Sunderland failed to score a first-half goal for the 19th time in the Premier League this season, a joint league-high with Crystal Palace.
- Only Swansea (28) have conceded more home goals in the Premier League this season than Sunderland (24).
- All three of Saints' away Premier League victories this season have seen them score at least three goals (3-0 vs West Ham, 3-1 vs Bournemouth).
- The past two occasions Southampton have scored four goals in a Premier League match away from home, the other side has been relegated at the end of the campaign (Wolves in 2003-04 and Aston Villa in 2015-16).
Sunderland are heading to New York for some winter training next week as they are without a game because of the FA Cup's return.
They next play in the Premier League on 25 February against Everton (kick-off 15:00 GMT).
Southampton's next game is the EFL Cup final on 26 February (kick-off 16:30) and do not play again in the league until Watford on 4 March.
- 16O'SheaSubstituted forPienaarat 45'minutes
- 24GibsonSubstituted forKhazriat 81'minutesBooked at 90mins
- 7LarssonSubstituted forBoriniat 58'minutes
- 12Simões Domingues
- 2Cédric Soares
- 11TadicSubstituted forHøjbjergat 82'minutes
- 20GabbiadiniSubstituted forLongat 73'minutes
- Paul Tierney
- Shots on Target
Second Half ends, Sunderland 0, Southampton 4.
Wahbi Khazri (Sunderland) is shown the yellow card for hand ball.
Hand ball by Wahbi Khazri (Sunderland).
Foul by Maya Yoshida (Southampton).
Wahbi Khazri (Sunderland) wins a free kick on the right wing.
Goal! Sunderland 0, Southampton 4. Shane Long (Southampton) right footed shot from the centre of the box to the bottom right corner. Assisted by James Ward-Prowse.
Own Goal by Jason Denayer, Sunderland. Sunderland 0, Southampton 3.
Attempt missed. Fabio Borini (Sunderland) header from the centre of the box misses to the right. Assisted by Bryan Oviedo with a cross.
Corner, Sunderland. Conceded by James Ward-Prowse.
Foul by Nathan Redmond (Southampton).
Steven Pienaar (Sunderland) wins a free kick in the attacking half.
Corner, Sunderland. Conceded by James Ward-Prowse.
Attempt blocked. Steven Pienaar (Sunderland) left footed shot from outside the box is blocked. Assisted by Wahbi Khazri.
Corner, Sunderland. Conceded by Maya Yoshida.
Attempt blocked. Wahbi Khazri (Sunderland) right footed shot from outside the box is blocked. Assisted by Steven Pienaar.
Substitution, Southampton. Pierre-Emile Højbjerg replaces Dusan Tadic.
Substitution, Sunderland. Wahbi Khazri replaces Darron Gibson.
Ryan Bertrand (Southampton) wins a free kick in the defensive half.
Foul by Billy Jones (Sunderland).
Attempt saved. Nathan Redmond (Southampton) left footed shot from the left side of the box is saved in the top centre of the goal. Assisted by Dusan Tadic.
Foul by James Ward-Prowse (Southampton).
Bryan Oviedo (Sunderland) wins a free kick in the defensive half.
Offside, Sunderland. Bryan Oviedo tries a through ball, but Jermain Defoe is caught offside.
Foul by Jack Stephens (Southampton).
Jermain Defoe (Sunderland) wins a free kick on the left wing.
Foul by Shane Long (Southampton).
Billy Jones (Sunderland) wins a free kick in the defensive half.
Corner, Southampton. Conceded by Vito Mannone.
Attempt saved. Shane Long (Southampton) header from the centre of the box is saved in the top left corner. Assisted by Cédric Soares with a cross.
Substitution, Southampton. Shane Long replaces Manolo Gabbiadini.
Attempt missed. James Ward-Prowse (Southampton) header from the centre of the box is close, but misses to the left. Assisted by Nathan Redmond with a cross.
Attempt saved. Ryan Bertrand (Southampton) left footed shot from outside the box is saved in the top centre of the goal. Assisted by Oriol Romeu.
Attempt missed. James Ward-Prowse (Southampton) right footed shot from outside the box is close, but misses to the right. Assisted by Nathan Redmond.
Oriol Romeu (Southampton) wins a free kick in the defensive half.
Foul by Steven Pienaar (Sunderland).
Delay over. They are ready to continue.
Delay in match Cédric Soares (Southampton) because of an injury.
Attempt saved. Didier Ndong (Sunderland) right footed shot from outside the box is saved in the bottom right corner.
Nathan Redmond (Southampton) wins a free kick in the defensive half.