Arsenal boss Mikel Arteta has lavished praise on Gabriel Jesus after his side's Champions League win over Sevilla on Tuesday night, insisting the Brazil international has 'changed their world'.
The Gunners went into the game in Spain hoping to bounce back after a shock defeat to Lens on matchday two.
Jesus provided the assist for Gabriel Martinelli's opener, with the winger opening the scoring just before half time.
And the striker then got on the scoresheet himself in the 53rd minute to double his side's advantage.
Football news: Gabriel Martinelli opened the scoring as Arsenal beat Sevilla on Tuesday night
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Sevilla looked capable of mounting a comeback when Nemanja Gudelj pulled one back five minutes later.
But Arsenal were able to hold on to claim all three points and put their recent defeat to Lens behind them.
The north London giants are top of Group B, a point ahead of Lens.
And Arteta, speaking at his post-match press conference, hailed Jesus and said the Samba star has 'changed their world'.
"Really happy with that part – big games for big players, and he needed to produce those moments to win in stadiums like this," he said.
"He’s done it, and obviously, he opened the game for us in a great way.
"And then, we’re really sad because he felt something in his hamstring, and he had to come off and I’m worried about that."
He added: "He came here for a reason; he changed our world.
"He’s brought so much belief and energy to the team, and he needs to step into those moments. "That’s why he played, and he’s done that. That’s when a player
becomes accountable to the team, and the team relies on those players to win games.
"We need players like this. You want to play, go to Manchester City, then come to Stamford Bridge, then coming here; that’s the level we are at right now.
"To come here and win, it’s a big credit to the boys."
Arteta was also asked whether Jesus' impressive Champions League goalscoring record was one of the reasons he signed the player last year.
And the Spaniard believes the former Manchester City man can get even better in the coming years ahead.
"For sure – he’s been through a lot in the last few years and he’s still really young," he added.
"He has enormous experiences, and some of them, while not the nicest, they’ve been necessary to [shape] the player he is today.
"I’m really happy to have him in the team."
Had Arsenal lost to Sevilla, they'd have been facing a huge fight to qualify for the Champions League knockout stages.
That's something Arteta was fully aware of - and he knew his side 'had to react' in order to boost their chances of achieving their goals.
"That’s the Champions League, that’s the group stages and that shows you the difficulty of winning, and how much you have to value that," he stated.
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Football news: Gabriel Jesus was outstanding as Arsenal beat Sevilla in the Champions League
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"Against Lens, obviously, that result put us in difficult position and the team had to react.
"We are coming off the back of a period of very difficult games, and the team constantly has to step in, and go against adversity as well, and injuries that we’ve picked up with some big players.
"The team is so willing and so determined to at least try their best."
Arsenal are next in action against Sheffield United in the Premier League on Saturday (3pm).
And they'll now go into that game full of confidence as they look to keep their title hopes back on track.
Football news: Mikel Arteta and Arsenal will be dreaming of Champions League glory after Sevilla win
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Arsenal are currently third in the table, two points behind fierce rivals Tottenham.
Spurs returned to the summit with a 2-0 victory over Fulham on Monday - but manager Ange Postecoglou was far from happy.
