Riyad Mahrez made the difference as Manchester City cut Arsenal's lead in the Premier League to five points with a 1-0 victory over Chelsea at Stamford Bridge.
The Gunners' goalless draw with Newcastle United on Tuesday opened the door for Pep Guardiola's side to take advantage, though the defending champions were far from their best in the opening period.
Carney Chukwuemeka and Nathan Ake struck the frame of the goal either side of the break, with clear-cut opportunities limited for both sides throughout.
Coming off the bench, Mahrez changed the picture with a 63rd-minute close-range finish that will leave Arsenal looking over their shoulders ahead of what is set to be a significant month.
Chelsea's injury issues were compounded in the opening 20 minutes, losing Raheem Sterling and Christian Pulisic. The latter's issue came after the Blues' first real sight of goal, with the American forward halted by an inch-perfect tackle by John Stones.
Substitute Chukwuemeka had the best opportunity in what was a subdued first half, cutting onto his right foot outside the box and beating Ederson with a low drive that bounced back off the left post.
City boss Guardiola shuffled his deck at the break, introducing Manuel Akanji and Rico Lewis in place of Joao Cancelo and Kyle Walker, which sparked life into the defending champions with Ake heading against the post and Kevin De Bruyne forcing a low save from Kepa Arrizabalaga.
Bernardo Silva's fine footwork crafted another opening, teeing up De Bruyne to fire wide, before further changes followed on the hour mark with the introduction of Jack Grealish and Mahrez.
That pair combined three minutes later, Grealish drilling a pass across the face of goal from the left for Mahrez to tap home with ease.
City held on to secure what could be a valuable win in the title race, while Chelsea were left 10 points adrift of fourth-placed Manchester United in the hunt for Champions League football.
Neymar should have won five Ballons d'Or, claims Buffon
Neymar should have won the Ballon d'Or five times, so says Gianluigi Buffon.
Italy great Buffon played alongside Neymar at Paris Saint-Germain for a season in 2018-19.
Neymar joined PSG in a world-record transfer from Barcelona in 2017, but was unable to drive the French club to their maiden Champions League trophy.
He left in 2023 to join Al-Hilal in Saudi Arabia, but has hardly featured for the Asian giants. He is back on the sidelines due to a hamstring issue, having only just returned from a year-long lay-off after sustaining an anterior crucial ligament (ACL) injury.
Neymar was tipped for greatness when he moved to Europe from Santos, but despite a glittering career, especially at Barcelona, he never has managed to win the Ballon d'Or.
And that is something that upsets his former club-mate Buffon.
"It's hard to pick a rival," Buffon told Corriere della Sera
"I've played against three generations: Zinedine Zidane, Ronaldo, Lionel Messi, Cristiano Ronaldo, Andres Iniesta… Choose one? Neymar.
"For the player he is and the person he is, he should have won five Ballons d'Or."
Even at PSG, Neymar was often overshadowed by Kylian Mbappe.
When Messi joined that deadly duo in 2021, meanwhile, the trio could not have the impact on the European stage that PSG's Qatari owners would have wished for.
Palestine hold South Korea as Japan down China in World Cup qualifying
Son Heung-min scored but South Korea were held to a 1-1 draw by Palestine in World Cup qualifying on Tuesday.
Tottenham forward Son netted in the 16th minute at Amman International Stadium in Jordan.
That came four minutes after Palestine had taken the lead through Zeid Qunbar.
Yet South Korea could not build on that momentum. Despite finishing with 15 shots, they accumulated only 0.84 expected goals (xG).
South Korea, who are six points clear in qualification Group B, had five shots on target, with Son having four of them, as Palestine held on for a memorable result.
In Group C, Japan consolidated their lead with a 3-1 defeat of China in Xiamen.
Koki Ogawa scored twice, opening the scoring and netting Japan's third.
Ko Itakura put Japan 2-0 up on the stroke of half-time, with Lin Liangming pulling one back for China early in the second half.
The match was briefly disrupted as some spectators ran onto the pitch.
Doncic backs Mbappe to turn fortunes around at Real Madrid
NBA superstar Luka Doncic has backed Kylian Mbappe to "figure it out" after his underwhelming start to life at Real Madrid.
Mbappe has scored eight goals in 16 games for Madrid in all competitions since joining as a free agent following the expiration of his Paris Saint-Germain contract.
He has gone four matches without a goal – a run that includes losses to Barcelona and Milan – and has been left out of France's latest squad.
However, Dallas Mavericks guard Doncic – a Real Madrid supporter due to his previous ties with the sports club – can see Mbappe turning things around.
"Obviously [their season] could be better," Doncic told Managing Madrid after the Mavericks' win over the San Antonio Spurs on Saturday.
"But when you get a guy like Mbappe, it takes some time to get used to it. We'll figure it out."
Mbappe has scored six goals in 11 LaLiga appearances for Madrid but has underperformed his season's expected goals (xG) total by 2.04.
The forward is averaging a goal every 166 minutes in all competitions this term, compared to one every 88 minutes for PSG in his last of seven seasons in Paris.
Madrid thrashed Osasuna 4-0 last time out in the league to return to winning ways but still trail leaders Barcelona by six points.
Asked about his connections with Madrid, former Los Blancos basketball player Doncic said: "I follow Real Madrid every time.
"I grew up there. They taught me everything, so it's a part of my life. You can call it a secondary home.
"I learned a lot of stuff there and, especially, they gave me a way to be here right now [in Dallas]. I always appreciate that 100%."
Madrid return to action after the international break with a trip to Leganes on Sunday.
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