Wenderson Galeno scored in stoppage time to give Porto a 1-0 win over Arsenal in the first leg of the round of 16 of the Champions League on Wednesday.
Galeno broke the deadlock with a right-footed shot into the far corner four minutes into added time, leaving Arsenal in need of a win in the return leg in London on March 12.
He should have put Porto ahead n the first half when he missed two sitters from close range – first hitting the post then somehow putting an even better chance from the rebound wide.
Arsenal’s best chances came from set pieces as William Saliba, Gabriel and Kai Havertz put efforts from dead ball situations wide.
The Gunners’ best opening after the break fell to Leandro Trossard, who blasted over after being found unmarked via Declan Rice’s corner, but the referee blew for a foul in the penalty area which may have ruled out any on-target shot.
But Galeno’s dramatic winner means Mikel Arteta’s side will have to come from behind to progress to the quarter-finals when the second leg comes around on March 12.
The English team, making its first Champions League appearance since 2016-17, failed to get past the round of 16 in seven consecutive tries from 2011-17.
Arsenal who had just returned to the quarter finals of Europe’s elite club competition for the first time in 14 years, had lost its last six first-leg matches in the last 16.
Porto was eliminated in the round of 16 last season. The Portuguese team last reached the quarterfinals in 2021.
Porto was without Iranian striker Mehdi Taremi because of a right thigh injury.
