Citing four unidentified sources, Sports Illustrated reports that Alex Rodriguez tested positive for steroids in 2003.
Rodriguez declined to discuss the tests when approached by SI on Thursday at a Miami gym. He told a reporter to speak to the players' union. Calls from SI to union head Donald Fehr (feer) were not returned.
Rodriguez played for the Texas Rangers in 2003, when he won the AL home run title and MVP award. He was traded to the Yankees in 2004.
When asked about the Rodriguez situation, MLB executive vice president Rob Manfred said that "Because the survey testing that took place in 2003 was intended to be nondisciplinary and anonymous, we cannot make any comment on the accuracy of this report as it pertains to the player named."
The players' union refused to directly address the story's accuracy.
"Information and documents relating to the results of the 2003 MLB testing program are both confidential and under seal by court orders," the union said.
"Anyone with knowledge of such documents who discloses their contents may be in violation of those court orders," the union added.
Baseball's drug policy has prohibited the use of steroids without a valid prescription since 1991, but there were no penalties for a positive test in 2003.