Argentina captain Lionel Messi hit out at the referee, despite the in-form Copa America champions' 1-0 win against Peru in World Cup qualifying.
Lautaro Martinez's header two minutes before half-time settled Thursday's contest in Buenos Aires, where La Albiceleste extended their unbeaten streak to 25 matches across all competitions.
Peru wasted a chance to salvage a point when Yoshimar Yotun's penalty cannoned off the crossbar with 25 minutes remaining.
Messi reacted to Argentina remaining undefeated on the road to Qatar 2022 through 11 CONMEBOL fixtures, though it remains to be seen what he was referring to when mentioning the referee after Martinez had also gone down inside the area in the first half.
"Difficult match, difficult to play. A lot of wind, they were playing deep, leaving little space for us," Messi wrote via Instagram.
"The referee always does this when he referee's us, as if he does it on purpose. But well, three important points and we're close to our objective."
Martinez scored his 17th international goal and the Inter star is Argentina's top scorer in the Lionel Scaloni era, two ahead of Messi.
"The play against Uruguay was more fluid, there was more space. It got complicated for us a little but we always tried to have a solution and today, we knew how to find that," Martinez said.
"Every time we go out on the pitch, we try to give our all because this shirt deserves respect and responsibility. All of this is exciting, my family saw me play again after a long time. Today, they're here again. I hope that the people have enjoyed the win."
Argentina head coach Scaloni became the second coach in the history of the national team to go 25 games unbeaten in all competitions, after Alfio Basile.
"Today we felt a bit tired. Playing a triple date in South America is wearisome," added Scaloni. "We took it forward and got the three points, which is what we wanted.
"It was a very important game and there was tension for that. I do not think that Argentina was satisfied with the result. Peru plays well, it is a very difficult opponent. Beyond the penalty play, I think the game was controlled."