TMZ broke the story ... Agate Printing, Inc. filed a lawsuit against IMG and its owner, Ted Forstmann, claiming Federer gave Forstmann information about a match he played in at the 2007 French Open ... and Forstmann later used the information to make a $40,000 wager on Roger.
But moments ago -- at a press conference during an event in China -- Federer said, "It’s disappointing that someone’s throwing my name around. I would never do such a thing."
Federer continued, "My fans know that, the people who know me ... I have nothing to hide. I’m sorry for those who think there is something to the story. But there’s nothing."