An injury-time winner from Galeno saw Mikel Arteta's side fall to a 1-0 defeat in Portugal after a toothless display from his attack
Arsenal's return to the Champions League knockout stages got off to the worst possible start as a stunning injury-time strike from Galeno saw them sink to a 1-0 defeat at Porto in the first leg of their last-16 tie.
Mikel Arteta's side went into the game full of confidence having hit 21 goals in five Premier League games since the turn of the year, but they were left frustrated by a resolute Porto outfit and failed to even muster a single shot on target during what turned into a scrappy and at times tortuous affair.
Despite that, the visitors at least looked set to take a draw back to north London for the second leg, a result which would have still left them overwhelming favourites to go through. But Galeno, who produced an incredible double-miss from close range in the first half, had other ideas when he curled home a delicious effort from 25 yards after Gabriel Martinelli's poor cross-field pass had been cut out with just seconds remaining.
GOAL rates Arsenal's players from the Estadio do Dragao…
Getty ImagesGoalkeeper & Defence
David Raya (7/10):
Got down sharply on a couple of occasions to deal with some shots on target, something he hasn't been used to having to do in recent weeks. Could do nothing about Galeno's superb late winner.
Ben White (6/10):
Was constantly popping up in central midfield alongside Rice. Like Saliba, he looked a bit off it at times when in possession.
William Saliba (6/10):
Looked unusually nervy at times. Got caught napping on a couple of occasions and was lucky Galeno didn't punish him for his hesitancy in the first half. Missed a good chance just before half-time when he headed wide.
Gabriel Magalhaes (7/10):
Was far more convincing on the night than his centre-back partner. Typically strong performance.
Jakub Kiwior (5/10):
Relatively solid in the first half, although he could have moved the ball quicker to Martinelli at times. Porto targeted him a bit more in the second half and he struggled on more than one occasion, especially after he was booked.
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Declan Rice (7/10):
He was booked after 65 seconds so had to be careful all night to avoid a second yellow. Kept things ticking over and made a vital block in the second half at the near post.
Kai Havertz (5/10):
Sent a header wide right at the end of the first half that he could have done better with. Never really threatened from open play.
Martin Odegaard (6/10):
Always looked the most likely to prize open the solid Porto backline. As bright as anyone in an Arsenal shirt going forward. Pressed excellently as always.
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Bukayo Saka (5/10):
Has been in sensational form in recent weeks, but struggled to find any space to do Porto much damage. The hosts handled him very well.
Leandro Trossard (5/10):
On the fringes of things. Dropped deep at times to try and get involved as he wasn't getting much service in the final third. It just wasn't his night.
Gabriel Martinelli (4/10):
He was probably Arsenal's best outlet in the first half, but his touch let him down a couple of times. Nowhere near his best and seemed to drift out of the game after the interval. Really poor decision and pass in stoppage-time which Porto pounced on to score the winner.
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Getty ImagesSubs & Manager
Jorginho (5/10):
On the final 20 minutes but couldn't alter things. Misplaced a couple of passes, which was unusual for him, although that probably summed up the game.
Mikel Arteta (5/10):
No real surprise he stuck with the same XI that has performed so well in recent weeks, but maybe he could have opted for Jorginho from the start to help his side get more control. Only made one sub, which was surprising given how flat Arsenal's attack was.