Arsenal reignited their Premier League title challenge with a stirring fightback to beat Tottenham 2-1 in the north London derby.
Mikel Arteta's side were rocked by Son Heung-min's early opener at the Emirates Stadium.
But they seized the bragging rights against their bitter rivals thanks to Dominic Solanke's own goal and Leandro Trossard's strike just before half-time.
Arsenal's first win in four games in all competitions lifted them within four points of leaders Liverpool, who were held to a 1-1 draw by Nottingham Forest on Tuesday.
Liverpool's game in hand on Arsenal still makes them title favourites, but the Gunners are at least applying some pressure on Arne Slot's men.
Beaten 2-0 by Newcastle in the League Cup semi-final first leg last week and eliminated from the FA Cup third round by 10-man Manchester United on penalties on Sunday, Arsenal were desperate for a response and Tottenham once again proved their ideal opponents.
Questions have been asked of Arteta's ability to add more silverware to the 2020 FA Cup, which remains the only trophy of a reign that started in 2019.
With Bukayo Saka already sidelined due to hamstring surgery, Gabriel Jesus's potentially season-ending knee injury had added to Arteta's woes.
But Arsenal have now won seven and drawn one of their last eight league games against Tottenham.
Mikel Arteta's team are now on 43 points after 21 matches, four points behind Liverpool.
"We had some big chances and big situations. At the end we had to suffer more than we wanted," he said. "When you have opportunities to close the gap, you have to take them. We are on a really consistent run in the Premier League."
But it was another painful blow for under-fire Tottenham boss Ange Postecoglou, whose team are just eight points above the relegation zone.
"We let Arsenal dictate the game," Postecoglou said after the match. "Second half was a little better but nowhere near good enough – not acceptable."
Postecoglou must find a solution to the inconsistency that saw them beat Liverpool 1-0 in the League Cup semi-final first leg before needing extra-time to see off fifth tier Tamworth in the FA Cup third round.
Tottenham are without a win in their last five league games, losing four of those to drop to 13th place.
Raheem Sterling wasted a golden opportunity to put Arsenal ahead in the opening moments when his heavy touch allowed Djed Spence to clear after the winger raced through on goal.
Looking wracked with nerves, Tottenham keeper Antonin Kinsky was fortunate not to gift a goal to Arsenal on his Premier League debut after taking too long to clear, with Kai Havertz unable to apply the finishing touch.
Meanwhile, Alexander Isak fired Newcastle into the Premier League's top four after scoring twice in a 3-0 cruise against Wolves.
Red-hot Isak found the net for the eighth league match in a row as the Magpies leapfrogged faltering Chelsea into fourth spot in the table.
The Swedish international put the home side ahead in the 34th minute when his shot took a huge deflection off Wolves defender Rayan Ait-Nouri, leaving Jose Sa wrong-footed.
Isak doubled Newcastle's lead shortly before the hour mark, controlling Bruno Guimaraes' pass before firing home for his 15th league goal of the season and Anthony Gordon added a third.
Eddie Howe's men, who have now won six straight league games, have recovered strongly from a lengthy poor spell to make a powerful case for a Champions League spot next season.
Taking advantage of the faltering form of Manchester City and Chelsea, they are just three points behind third-placed Nottingham Forest.
Elsewhere, David Moyes' return as Everton manager failed to muster a response from the toothless Toffees in a 1-0 home defeat to Aston Villa on Wednesday.
Ollie Watkins' winner early in the second half lifted Villa up to seventh, just three points off the Premier League's top four.
By contrast, 16th-placed Everton are looking over their shoulders, just one point above the relegation zone.
A run of no wins and just one goal in his last five games in charge cost Sean Dyche his job as Everton boss. (AFP)