Pep Guardiola lauded his Manchester City side's "perfect" performance after defeating a Napoli team he believes is one of the best he has ever faced.
After City bossed the opening half an hour - scoring twice, through Raheem Sterling and Gabriel Jesus - they came under siege from the Serie A leaders.
Ederson saved one penalty from Dries Mertens and saw Amadou Diawara dispatch another, but City were able to see out the three points.
Guardiola believes that such a win was only possibly because his team delivered a flawless display at the Etihad Stadium.
"It was an amazing game," he told BT Sport. "Both teams had the same idea, high pressing, a lot of passes, attack after that.
"[Napoli] are one of the best teams I've faced in my career. No doubt about that. Maybe the best.
"It was perfect. If we did not play good, we could not beat that team. It would be impossible. If we were not aggressive without the ball, if we were not clear without the ball, no chance.
"It is a team [against which] you cannot have the ball for 90 minutes. We wanted the ball, but they have the quality. It was so demanding.
"To have nine points after three games is so important for us to qualify. The group is so tough. Shakhtar Donetsk play so good - we saw it here and they are a really good team too."
City now need just a point at the San Paolo in a fortnight to progress, but Guardiola insists they will again go for the win.
He added: "The situation is that we go to the next one and try to win the next game at Napoli. We are close, but it's not done. We cannot relax."
|Anthony fires back at Thunder fans unhappy he´s staying|
|MLS Review: New York City edge Toronto in Torrent´s first game|
|Watson shoots 63 to win Travelers for third victory of season|
|Iran contest not all about Ronaldo, insists Santos|
|Truex´s team use tricky strategy to win at Sonoma|
|World Cup 2018: England at home, Brazil´s party and exploding White Nights in St Petersburg|
|Pogba reveals ´issues´ with Mourinho|
|Mascherano plays down rumours of Sampaoli bust-up|
|Sweden winger Durmaz says racist abuse ´passed limit´|
|Morgan hails ´outstanding´ Buttler century|
|Paine to discuss ODI future after England whitewash|
|Cuper unsure of Egypt future as El Hadary nears milestone|
|Koepka ´shutting down´ until Carnoustie|
|Quintero and James plot Colombia´s way through uncharted territory|
|Federer upbeat despite shock Halle defeat|
|Journalists should round on Vettel - Verrstappen|
|Poland 0 Colombia 3: Falcao´s maiden World Cup goal revitalises Pekerman´s side|
|World Cup 2018: Cossack kids, Swan Lake and the Selecao in Rostov-on-Don|
|Maria takes maiden title in Mallorca|
|Hierro: I am 100 per cent the coach of Spain|
|Busquets recognises Iniesta´s burning ambition|
|Denmark v France: Tolisso hoping for second chance|
|Eight-try Wakefield hammer sorry Widnes|
|World Cup 2018: A panda, a tapir and a nightmare for Willy in Nizhny|
|Senegal´s Wague makes African history in World Cup|
|Cilic fights back to beat Djokovic in enthralling Queen´s final|
|Neymar and Suarez among players to send Messi birthday wishes|
|Strength of Senegal and Japan´s determination could trouble England and Belgium|
|Hamilton questions Vettel punishment after Bottas´ race ´destroyed´|
|Brilliant Buttler seals whitewash in Old Trafford thriller|
|World Cup 2018: An egg-and-spoon race, vodka and the Pogbas in Kazan|
|Queiroz tells his Iran players to follow the ´three Rs´ against Ronaldo and Portugal|
|Pizzi calm over Salah threat|
|Japan 2 Senegal 2: Honda gatecrashes Cisse´s party|
|Harden should be MVP ´hands down´, says World Peace|
|Southgate optimistic over Alli recovery for Belgium decider|
|Neymar´s tears no surprise to Fagner|
|Unhappy Renard continues ref rant|
|Wallace takes BMW International title despite Olesen 61|
|Hamilton cruises back to standings summit with France win|
|In-form Kvitova defends Birmingham title|
|Southgate responds to toughest England week in record-breaking style|
|Uruguay not thinking about Portugal or Spain, insists Cavani|
|Coric stuns Federer to claim title in Halle|
|England 6 Panama 1: Kane hat-trick sees Southgate´s side sail through|
|Australia v Peru: Juric keeping the faith as Socceroos chase unlikely last-16 spot|
|England surpass class of 1966 in Panama rout|
|Nigeria v Argentina: All eyes on Messi to rescue final World Cup chance|
|NSW seal Origin series with comeback win|
|World Cup 2018: Stalin´s bunker, a space museum and Serbian specials in Samara|
|Croatia looking out for number one - Lovren|
|Heritage at back of Australian minds ahead of potential Croatia encounter|
|It may be my last World Cup - ´Realistic´ Pogba determined to reign in Russia|
|Lionel Messi´s birthday: What might the Barcelona star wish for?|
|Russia readying Dzagoev for last-16 clash|
|Germany apologised for reaction aimed at Sweden bench|
|Picture this! Sterling starts for England against Panama|
|World Cup 2018: A Russian romp, Maradona and the party in Moscow|
|Happy birthday, Lionel Messi! 10 of the Argentina star´s best goals|
|Modric worthy of Ballon d´Or, says Lovren|
|Sigurdsson ready for Croatia reunion as Iceland go for broke|
|Iceland v Croatia: Dalic to rest stars for Hallgrimsson divorce hearing|
|Men´s tennis will have to ´wake up´ after Federer and Nadal, says King|
|Tennis star Djokovic backs VAR despite Serbia controversy|
|Socceroos have deserved more at World Cup – Skoko|
|Dodgers top Mets in Kershaw´s return from DL|
|MLS Review: Red Bulls end Dallas´ unbeaten run, Sporting stage comeback|
|Hierro: This Spain team similar to 2010 World Cup champions|
|Dowrich, Holder lead Windies fightback after poor start|
|With Neymar back, Brazil are World Cup favourites – Lugano|