Among other things, McNamee told committee lawyers about evidence he had saved for more than seven years -- vials, needles, gauze pads and a crumpled beer can to store them in -- that he said would incriminate Clemens, his former close friend and training client. Clemens' attorneys again denied he had ever used drugs and called McNamee's actions "psycho."
"It will be a cross between a zoo and a circus," said Larry Sabato, director of University of Virginia's Center for Politics. "It will be quite a show. You hold a hearing on an energy program, and you're lucky if you get two reporters. You have something like this, and you've got to find an auditorium."
Also testifying will be Clemens' close friend and star pitcher Andy Pettitte, who has already provided credibility to McNamee by admitting he did take injections of human growth hormone, as McNamee told former Sen. George Mitchell in his investigation into baseball doping. Clemens' former teammate Chuck Knoblauch is also scheduled to testify.
"Clemens is a mythical figure," Sabato said. "Let's be honest: People always like to see the greats fall."
The fifth attendee will be a man identified by some as the most involved baseball doping figure.
Kirk Radomski, a former New York Mets clubhouse attendant, pleaded guilty last year to supplying McNamee and others with steroids and human growth hormone.
Radomski had his day in federal court Friday in San Francisco, when he was sentenced to five years' probation and an $18,575 fine after cooperating with federal authorities and baseball investigators putting together the Mitchell Report. His deposition to Congress is set for Monday.
Radomski pleaded guilty in April 2007 to selling steroids, human growth hormone, amphetamines and other drugs to "dozens of current and former MLB players," according to the U.S. Attorney's office in San Francisco.
Radomski had deposited the proceeds of his drug sales into his personal bank account, and relied on the money to finance his Long Island, N.Y., home, which served as his "base of operation, warehouse, and communication center for his anabolic steroid-dealing business," federal prosecutors said.
That home was raided by federal agents in December 2005, and Radomski ultimately admitted to selling drugs to baseball players from 1995 until the raid. As part of his plea bargain, he promised to cooperate with Mitchell's investigators.
