Agent: Federer had mono at Aussie Open (AP) Roger Federer couldn't figure out why he felt so sluggish at the start of this season. His doctors eventually gave him an explanation: The world's No. 1 tennis player had mononucleosis. "Roger found out he had mono, and didn't know it. He found out a couple of weeks ago. That's probably what was wrong with him," Federer's agent, Tony Godsick, said Friday. Publish Date: Fri, 07 Mar 2008 15:13:05 PST Read more...