"It is very unfair to include Roger's name in this report," said Clemens' lawyer, Rusty Hardin. "He is left with no meaningful way to combat what he strongly contends are totally false allegations. He has not been charged with anything, he will not be charged with anything and yet he is being tried in the court of public opinion with no recourse. That is totally wrong."

"There has never been one shred of tangible evidence that he ever used these substances and yet he is being slandered today," said Hardin, who called McNamee a "troubled man."

Former Mets clubhouse attendant Kirk Radomski also provided information as part of his plea agreement in a federal steroids case. Jose Canseco's book "Juiced" also was cited.

"Former commissioner Fay Vincent told me that the problem of performance-enhancing substances may be the most serious challenge that baseball has faced since the 1919 Black Sox scandal," Mitchell said.

Rafael Palmeiro, who tested positive for steroids, was among the former players named. So were Kevin Brown, Benito Santiago, Lenny Dykstra, Chuck Knoblauch, David Justice, Mo Vaughn and Todd Hundley.

Mike Stanton, Scott Schoeneweis, Ron Villone and Jerry Hairston Jr. were among the other current players identified.

"We identify some of the players who were caught up in this drive to gain a competitive advantage," the report said. "Other investigations will no doubt turn up more names and fill in more details, but that is unlikely to significantly alter the description of baseball's 'steroids era' as set forth in this report."

"The illegal use in baseball of these substances also victimize the majority of players who don't use them. We heard from many former players who believe it was grossly unfair that the users were gaining an advantage," Mitchell said.

The report took issue with assertions that steroids were not banned before the 2002 collective bargaining agreement.

They had been covered, it said, since the 1971 drug policy prohibited using any prescription medication without a valid prescription, and were expressly included in the drug policy in 1991.

"Steroids have been listed as a prohibited substance under the Major League Baseball drug policy since then," the report said, although no player was disciplined for them until the 2002 labor agreement provided for testing.

Mitchell is a director of the Boston Red Sox, and some questioned whether that created a conflict, especially because none of their prime players were in the report.

"Judge me by my work," Mitchell said. "You will not find any evidence of bias, special treatment, for the Red Sox or anyone else. That had no effect on this investigation or this report, none whatsoever."

Giambi, under threat of discipline from Selig, was the only current player known to have cooperated with the Mitchell investigation.

"The players' union was largely uncooperative for reasons that I thought were largely understandable," Mitchell said.