Inter Milan coach Jose Mourinho claimed his side could have won with seven men after they had two sent off in yesterday's Milan derby victory.
Inter moved closer to the Serie A title by beating rivals AC Milan 2-0.
The Nerazzurri ended the game with nine men, but still beat their nearest title rivals to open up a nine-point gap at the top of the table.
Wesley Sneijder's 25th-minute red card was particularly hard for Mourinho to digest and he hinted at there being an agenda against his side.
"It was a strange game," he said. "I think we all understand that it was no coincidence that he showed the red card to Sneijder. They are not going to allow us to wrap this title up.
"But we were perfect. We would have won this game even with seven men. Maybe with six we would have struggled, but we'd have won with seven."
Referee Gianluca Rocchi also sent Lucio off in second-half stoppage time, giving a dubious penalty to Milan for an unavoidable handball.
Julio Cesar saved Ronaldinho's spot-kick, but Mourinho (pictured above) called into question Italian football's integrity.
"Everything was done today to try and prevent Inter from winning. But I will leave it at that. This is your country and your league. One day I will go and leave this problem with you." Milan coach Leonardo conceded defeat, saying: "All this game does is teach us a few lessons."