(CNN)Here's a look at BALCO, the lab that provided steroids to several professional athletes, including baseball player Barry Bonds and track and field star Marion Jones.
August 2002 - Federal agents begin investigating BALCO, a California lab suspected of selling banned performance enhancing drugs to athletes.
Major League Baseball
Bonds and Gary Sheffield: Testified before the federal grand jury that they unknowingly took steroids given to them by Anderson.
Jones admitted that she used steroids before the 2000 Summer Olympics and lied to federal prosecutors about it. She was sentenced to six months in prison and two years of probation.
Bill Romanowski tested positive, but had already retired.
Shane Mosley admitted he unknowingly took steroids provided by BALCO.