Ilkay Gundogan 8, Sergio Aguero 6; Pepe 5, Luis Diaz 7: Manchester City v Porto player ratings

A Sergio Aguero penalty brought City level before second-half goals from Ilkay Gundogan and Ferran Torres secured a 3-1 win

MANCHESTER CITY RATINGS: Ederson - 7: The City goalkeeper was his usual picture of calm under pressure with the ball at his feet.

Kyle Walker - 8: Playing as well as he ever has. The City right-back is an expert at bailing his team out of trouble, as he showed with a first-half goal line clearance. EPA

Ruben Dias - 6: A sloppy pass led to Porto's opener but didn't put a foot wrong after that. AFP

Eric Garcia - 7: One of two players on the pitch wearing the No 50, the 19-year-old stood up well against Marega's physicality. AFP

Joao Cancelo - 5: The world's most expensive right-back looked a below-average left-back. Froze as Diaz sped past him for Porto's winner. EPA

Bernardo Silva - 6: Looked to make things tick for City in the absence of De Bruyne but had little impact on the game. AFP

Rodri - 8: Another rock solid performance at the heart of City's midfield. Almost scored a worldy while all eyes were on a coming together between Sterling and Pepe. AFP

Ilkay Gundogan - 8: His tenacity led to the penalty for City's first and his last contribution before being substituted was a sumptuous free kick to give City the lead. EPA

Riyad Mahrez - 7: Few in world football have a first touch as delicate as the Algerian winger. Should have made the scoreline even more impressive in the second half but his right-foot shot was saved by Marchesín. Reuters

Raheem Sterling - 7: A fine tackle to stop Marega in the first half showed the English forward's understanding of what his side need more from him on occasion. Won the penalty that led to City's equaliser. EPA

Sergio Aguero - 6: Scored his first Champions League goal in almost a year from the penalty spot but the Argentine did precious little else before being replaced on 68 minutes. EPA

SUBS: Ferran Torres - 7: Stood Pepe up and then shimmied past him with ease before unleashing an unstoppable shot minutes after replacing Aguero. EPA

Phil Foden - 7: A slick pass inside to set fellow sub Torres up for City's third. EPA

Fernandinho - N/A: The substitute was himself substituted minutes after coming on after picking up what appeared to be a thigh injury. Reuters

John Stones (not pictured) - N/A: Replaced the injured Fernandinho late on. Reuters

PORTO RATINGS: Agustín Marchesín - 7: Pulled off fine saves from Mahrez and Rodri and commanded his box well. AFP

Jesus Corona - 6: Recovered after a nervous opening when his hesitation under a high ball almost allowed Cancelo through on goal. EPA

Chancel Mbemba - 6: Panicked every time City ventured forward. EPA

Pepe - 5: Few are more masterful of the dark arts of defending than the 37-year-old Portuguese. Gave away a penalty, theatrically tried to claim one, kneed a stricken Sterling in the ribs and was then chasing Torres' shadow as the young sub ghosted past him for City's third. EPA

Malang Sarr - 6: The best of Porto's back three. Stood up well to City's attacks before he was replaced due to cramp late on. EPA

Zaidu Sanusi - 6: Tested Ederson with a first-half shot but otherwise struggled to get involved in the game. EPA

Fabio Vieira - 7: A fine Champions League debut for the 19-year-old midfielder. Didn't look out of place on the big stage. EPA

Sergio Oliveira - 6: Spent most of the game trying to draw the referee's attention to non-existent fouls by City. AFP

Mateus Uribe - 6: Did most of his best work in defence when Porto really needed him on the ball further up the pitch. Reuters

Luis Diaz - 8: The fleet-footed Colombian ghosted past three City defenders before unleashing a fierce shot to open the scoring for the visitors. Surprised to see him taken off after only 54 minutes. AFP

Moussa Marega - 7: Looked the most threatening player on the pitch in the first half, running the channels and giving City's centre-backs a good going over. Had a chance to double Porto's lead but passed to a teammate and eventually City scrambled clear. AFP

SUBS: Wilson Manafa - 6: A somewhat strange decision to replace the dangerous winger Diaz with a defensive-minded player. Didn't work out too well for coach Sergio Conceicao. AFP

Shoya Nakajima - 6: Showed some bright touches around City's area but never really threatened. Reuters

Medhi Taremi and Evanilson (neither pictured): Porto coach Sergio Conceicao gave Iranian Taremi and Brazilian Evanlison their Champions League debuts but neither made an impact. EPA

Manchester City came from behind to make a winning start in Champions League Group C on Wednesday with a 3-1 victory over Porto at the Etihad Stadium.

City had fallen behind to a fine 14th-minute solo strike from Luis Diaz but a Sergio Aguero penalty brought them level before second-half goals from Ilkay Gundogan and Ferran Torres secured the win.

Pep Guardiola's side, defeated in the quarter-finals last season, struggled to find their fluidity in the opening 45 minutes but as Porto tired after the break, City's quality proved enough.

"If I'm being honest we are struggling at the moment," said German midfielder Gundogan.

"Fernandinho went off at the end, we have players playing in different positions. I am not 100 per cent there because I had Covid, we are not all at the same moment.

"That is the challenge for this season, it's not going to end for a while."

To see how each player rated, simply swipe through the picture gallery above or click on the arrows.