Real Madrid's Juvenil A side beat the Chilean champions 3-1 in Saturday's Under-20 Intercontinental Cup final at the Santiago Bernabéu, a match in which Wanderers finished with only eight players on the pitch after three red cards.
Speaking days later on TNT Sports' Todos Somos Técnicos programme, head coach Felipe Salinas said the hosts had worn his players down before a ball was even kicked.
The day before the game, both squads were taken on a joint tour of the Bernabéu, including the club museum, so the Chilean players could familiarise themselves with the stadium.
Salinas found the exercise excessive: "They had us walking for more than an hour around the whole stadium.
"I said to the kid who was with us, how long is this tour going to keep us walking for, this one's very old, tomorrow we play, cut the tour short, there's nothing more to see."
Salinas argued that the physical toll of the occasion, not just the pre-match tour, played a central role in the result, pointing also to the demands of the long journey to Madrid and the atmosphere of the occasion itself. He was most pointed, though, about the performance of Polish referee Damian Sylwestrzak, who sent off three Wanderers players over the course of the match.
"He didn't speak English, sometimes he'd answer in Polish or German. We didn't know what to do to make him understand us. There were things that were beyond our control."
Goalkeeper Fabiano Avello backed up his coach's account after the final whistle, describing a total breakdown in communication with the officials: "We had zero communication with the referee.
"Real Madrid's players had very fluent English, so they could talk to the referee and we couldn't get past two words. Also, when we tried to talk to the referee, he would send us away. In that sense it was a big disadvantage, we didn't know what the referee was telling us."