Leandro Trossard and Bukayo Saka scored as Arsenal claimed a comfortable Champions League victory over lacklustre Sevilla.
Trossard, who started as number nine with Gabriel Jesus and Eddie Nketiah both injured, swept the Gunners in front in the 29th minute.
Saka clinched the three points in the 64th minute, racing away from the defence before slotting home.
Arsenal top Group B on nine points from four games, while Sevilla are bottom of the table.
The Spanish side, who won the Europa League last season, are still looking for their first win in this Champions League campaign.
They were comprehensively outplayed by the hosts, who took a deserved lead when Trossard finished Saka’s low cross after the England winger was set away by Jorginho’s fine through-ball.
Saka turned from provider to finisher with a composed second goal, having been played through by Gabriel Martinelli.
The game ended on a concerning note for Arsenal, however, as Saka limped off with five minutes left after twisting his ankle.
PSV’s 1-0 victory over Lens denied Arsenal the chance to clinch a place in the last 16 with two matches to spare.
But Mikel Arteta’s men will qualify with one win from their final two group matches, regardless of other results.
Following a strong start to the season, the last week has been testing for Arsenal. Back-to-back losses included the controversial 1-0 defeat at Newcastle, after which Arteta said the refereeing decision to allow the winner was “embarrassing” and a “disgrace”.
The Gunners has also had to deal with mounting injuries – Nketiah missed out with an ankle knock to join Jesus on the sidelines, leaving Trossard to lead the line. Captain Martin Odegaard was also absent again.
It left Arsenal without a full bench that featured several inexperienced players, and there were also questions about the form of some senior players who did feature.
Kai Havertz has been a target for supporter ire – and he spurned a simple chance to hand Arsenal the lead inside a minute, heading a corner wide when unmarked five yards out.
The German also lacked conviction shortly after half-time when fed by Saka on the edge of the area following a counter-attack, but having his shot blocked.
Havertz came closer on 55 minutes when curling a fierce 18-yard effort just wide.
What Arteta needed was a straightforward night against out-of-form opposition – and against a pliant Sevilla side, he got it.
Sevilla are top seeds in Group B in name only. Sat 15th in La Liga, with two wins from 11 league games and just four points above the relegation zone, they now face a challenge to even drop into the Europa League.
Their tactic to sit deep and wait out Arsenal’s attacking threat fell apart within half an hour and they offered little else going forward – their only shot on target came in the seventh minute of second half stoppage time.
Sevilla’s evening was summed up by Boubakary Soumare coming on as a second-half substitute, getting booked for a foul, then injuring himself in a sliding tackle and going off after just eight minutes.
They have now failed to win any of their last nine away matches in the Champions League, and have not triumphed in England since beating Manchester United in the 2017-18 season.
The Gunners, meanwhile, have not lost at home in the group stage since September 2015 against Olympiakos, going unbeaten in the past seven fixtures.