Sammy Sosa is among 104 major league players that tested positive for a performance-enhancing substance in 2003, according to the New York Times.
There were no penalties for a positive result in 2003, the first year that major league baseball conducted survey tests to see if drug-testing was needed.
According to the Times, the substance that Sosa tested positive for is unknown at this time.
Report: Sosa Tested Positive In 2003