Radomski agreed to cooperate with Mitchell's investigation as part of his plea deal.

NPR: Steroids Report Names 85 Baseball Players

Now, most of the checks are made out to Kurt Radomski, the former New York Mets clubhouse attendant who pleaded guilty to steroid-related charges in April.

NPR: Steroids Report Names 85 Baseball Players

Radomski told the group of selling steroids or other performance enhancers to many current and former major leaguers, backing up his claims with canceled checks in some cases.

FORBES: Magazine Article

Roger Clemens, Andy Pettitte and Miguel Tejada all land in the report, which relies heavily on evidence from former New York Mets clubhouse attendant Kirk Radomski, cooperating with the Mitchell group after being busted for selling drugs last year.

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