A fair few Atletico Madrid fans aimed some hostile abuse at Manchester City full-back Kyle Walker as he walked around the Wanda Metropolitano, but the England international didn't really care and stared back with a smile.
Here is footage of the moment below.
The Spanish capital hosted a fiesty affair [to put it lightly] on Wednesday night but after a mature performance from the away side, Pep Guardiola's men progressed to the Champions League semi-final thanks to a first leg strike from Kevin De Bruyne.
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Despite some relatively decent spells of football from both sides throughout, however, it was some unsavoury scenes in the final moments of the game that grabbed the headlines.
Stefan Savic pulled Jack Grealish's hair in the dying embers and with tempers still high, tunnel footage emerged showing Grealish and Savic having an animated conversation.
And moments later, City full-back Kyle Walker had to be restrained by teammate Ederson after an angry confrontation with Atletico player Sime Vrsaljko, who was furious after the full-time whistle.
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The 31-year-old defender put in a great shift for the Citzens before being replaced by Nathan Ake in the 73rd minute after picking up an ankle injury.
Walker appeared to sprain his ankle when clearing the ball.
The former Spurs man tried to run it off but after several minutes, Walker looked over to the bench to indicate he wasn't able to continue.
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But instead of being carried off, the right-back, who was on the opposite side of the dugout, walked around the Wanda Metrolitano stadium to a chorus of abuse from home fans.
Walker, meanwhile, stared at the home support and even raised a smile as he made his way around to the dugout.
After Wednesday night's full-time whistle, Manchester City manager Pep Guardiola admitted his side are in "big trouble" after both Walker and Kevin De Bruyne went off injured against the La Liga outfit.
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He told BT Sport: "We are in big trouble, so we can't forget we played three days ago, travelled, come here, have a lot of injuries now and I don't know what will happen in the next weeks but today we celebrate because it is the third time in Manchester City's history we are in the Champions League semi-finals.
"We cannot play all the time and score four or five goals, we are human beings - we come from a difficult game against Liverpool."
Thoughts on Manchester City's performance against Atletico? Can they finally go and win the Champions League this season?
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Let us know in the comments.
Topics: Manchester City, Kyle Walker, Champions League, Atletico Madrid