Rafa Benitez suffered another frustrating day in the dugout on Sunday, with Chelsea coming unstuck in their efforts to add a global prize to their UEFA Champions League crown.
One goal was enough for Corinthians to down the current kings of Europe, with South America prevailing in a cross-continental clash.
Oscar was among those unable to raise their game sufficiently against his fellow countrymen, but he is adamant that Chelsea did not take their foot off the gas in a game which could have landed them another piece of silverware.
"I didn't think we lacked effort, this happens," Oscar told Rede Globo after team-mate Lucas Piazon had reportedly accused Chelsea of showing a lack of desire.
"The whole of the Chelsea team need to learn how to play decisive games like this.
"Chelsea wanted this title so much, we have been training a lot in London for this competition. But defeat happens. Corinthians played well and deserved to win.
"It was a good game, we just didn't create as much as usual, Cassio made some great saves and Corinthians scored when they had the chance."
An outpouring of emotion from David Luiz at the final whistle showed just how much defeat meant to certain members of the Chelsea squad, with the Brazil international reduced to tears.
He said afterwards: "I can only speak for myself, but I really felt this defeat.
"I love playing football and I play to win. I have my own way of expressing myself and I was really sad after this defeat."
Speaking to Brazilian website UOL Esporte, Piazon, who was an unused substitute, had said: "A lot of us were missing the desire to be champion.
"I think Ramires and David Luiz, the Brazilians were the ones who gave the most, and now they are sad.
"We lacked character. Nobody wanted to fight...
"We went into a final without the will to win, and that's unacceptable."
However, Piazon later clarified his comments on Twitter, writing: "All I said was that Corinthians had more courage to play the final than us, that they wanted more this title and that they played with more passion than us!
"I would never say something about my team-mates, I'm just 18 and with them I learn a lot of good things."
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