Brazil forward Neymar has complained about the "inhuman" conditions he and his teammates were subjected to during the 2018 World Cup qualifying match against Bolivia on Thursday night.
Brazil, already assured of top spot in South American qualifying for next summer's tournament in Russia, played out a goalless draw at the Estadio Hernando Siles in La Paz.
The Brazilian players required oxygen following the match in the Bolivian capital, which is 11,932 feet above sea level.
And Neymar, the world's most expensive footballer following his €222 million (Dh954.5m) move to Paris Saint-Germain in August, was not pleased with the conditions and expressed his thoughts in an Instagram post.
"Inhuman to play in such conditions, field, altitude, ball ... everything bad," he wrote. "But we were happy for the performance of the team even with these conditions!"
Brazil manager Tite praised the efforts of the medical team for taking care of the players, and insisted he was satisfied with the result and performance on the pitch.
"I have to praise our professionals for all the logistics of the medical department, that gave all the support to make people feel the effects less," he said.
"The performance surprised. Playing here is very difficult. Strategically, I was very happy. We were upright, offensive. I want to emphasise this great performance. I am happy for the performance but upset about the result."