Ronaldinho has denied allegations he held a 'mega party' before AC Milan's 2-0 defeat by city rivals Inter last month.
Reports in Italy suggested the 29-year-old Brazilian had partied over three successive nights as his team-mates prepared for the 24th January derby.
But Ronaldinho strongly refutes the claims and said on his official blog: "I've been reading a few recent messages and have decided to get a few things off my chest and clarify things for all those accompanying me.
"Since yesterday, news has been circulating through media outlets that I had a 'mega party' the days prior to the Inter-Milan derby match and, even though it's true I was staying at a hotel in Milan, it is incorrect that I organised a party, with comments on the details of the supposed party even more incorrect.
"I've been working really hard the last few months, chasing after both my personal and professional goals.
"It seems unfair to me that the press use really old images of me and using the fact that I publicly admitted liking music to explain a bad result and create stories about me.
"I'm very involved with Milan's project and I'm working hard to provide my best, even though the results aren't always positive.
"These bits of news aren't going to affect my focus and I will continue working hard at playing great football."