Barcelona overturned a first half deficit to win 4-1 in Instanbul, and Arsenal humbled Lille 3-0 while Manchester United lost 2-0 to Atletico Madrid on Tuesday night.
Barcelona were stunned by Alexey Batrokov’s 28th minute strike to put hosts Galatasaray ahead but the Catalan giant came back to win 4-1 in Instanbul.
Joa Cancelo restored parity before halftime and Yamal brilliantly set up Fermin Lopez and Anthony Gordon to score in the 50th and 53th minutes.
Karim Adeyemi completed the victory for the Spanish champions.
At the Emirates Stadium, Lille held Arsenal for 64 minutes before Jurrien Timber scored the opener.
Two more goals from Eberechi Eze and Bukayo Saka made it 3-0 for the English Premier League Champions.
In Madrid, Atletico Madrid scored just 50 seconds into the game against Manchester United with a strike from Pablo Barrios.
Manchester United’s efforts to come back into the game were made harder when Leny Yoro was sent off in the 74th minute of the tie.
Nigerian international Ademola Lookman scored Atletico’s second goal five minutes later to put the game beyond Michael Carrick’s men.
Reacting to the defeat, Man United defender Lisandro Martinez slammed the United hierarchy for poor investment.
“I expect more investment, 100 per cent. I expect more from our technical director Jason Wilcox.
“I have to be honest, as players we have to do more but it is also important when you make a strong squad to be ready for this kind of night,” he said.
“You can’t keep changing, changing, and changing the manager. What about other areas? I can’t say more.
“Tonight it is easy to say the coach, easy to say the players but also we have to see other areas,” the Argentine added.
In other results, Bayern Munich were held to a 3-3 draw in Norway against Viking Stavanger after Michael Olise was sent off for a second yellow card.
Inter Milan were stunned by Club Brugge at the San Siro. Nicolo Tresoldi fired the Belgian Club to a 4-3 victory with a hat-trick.
More fixtures will be played tonight in Matchday 2 of the UCL league phase, including Manchester City against Champions PSG at the Etihad stadium.
