Gabriel Martinelli scored Arsenal’s second just 93 seconds after stepping off the bench
Arsenal eventually broke Newcastle United down to leave Eddie Howe’s side bottom of the Premier League without a win.
Howe, in the Magpies dugout for the first time after missing last weekend’s 3-3 draw with Brentford because of Covid, set up a team to try to contain Arsenal and eke out a point.
It appeared as if the strategy might be working until Bukayo Saka slotted home from Nuno Tavares’ through ball in the second half.
Saka went off injured and his replacement Gabriel Martinelli scored with his second touch, a wonderful volley from Takehiro Tomiyasu’s clipped pass over the top.
“He wasn’t comfortable. He felt something,” said Gunners boss Mikel Arteta of Saka as they await news of what is wrong with the England international.
Both sides had hit the woodwork in an otherwise uninspiring first half.
Jonjo Shelvey’s long-range drive was tipped on to the bar by the diving Aaron Ramsdale – and Pierre-Emerick Aubameyang hit a sitter off the post from six yards out.
Arsenal remain fifth in the Premier League, while Newcastle are five points adrift of safety with just over a third of the season gone.
A lot to do for Howe and Newcastle
Newcastle are on their longest ever winless run from the start of a league season. Only one side has ever stayed up in the Premier League after failing to win their opening 13 games – Derby County in 2000-01.
The Magpies know the further adrift they are on 1 January, when they have a chance to spend some of their Saudi owners’ money, the harder it will be to attract quality players.
It is unlikely though that Howe will have identified Emirates Stadium as a place to pick up points. The Gunners have won their past 10 home games against Newcastle in all competitions, and have never lost a Premier League home game against the team bottom of the table.
The side he put out looked attacking on paper but on the actual pitch they sat in and tried to frustrate Arsenal.
Shelvey was their main threat when they went forward with five of their nine efforts on goal, including a fine strike tipped on to the crossbar by Ramsdale.
Callum Wilson was isolated up front, with only…