Oh man. Here we go. Sports Illustrated is reporting that, according to four sources, Alex Rodriguez tested positive for two anabolic steroids in 2003.

In 2003, when he won the American League home run title and the AL Most Valuable Player award as a shortstop for the Texas Rangers, Alex Rodriguez tested positive for two anabolic steroids, four sources have independently told Sports Illustrated. ...

When approached by an SI reporter on Thursday at a gym in Miami, Rodriguez declined to discuss his 2003 test results. "You'll have to talk to the union," said Rodriguez, the Yankees' third baseman since his trade to New York in February 2004. When asked if there was an explanation for his positive test, he said, "I'm not saying anything."

MLB.com's Bryan Hoch has more:

SI.com reported that two sources familiar with the evidence that the government has gathered in its investigation of steroid use in baseball and two other sources with knowledge of the testing results said that Rodriguez is one of the 104 players identified as having tested positive, in his case for testosterone and an anabolic steroid known by the brand name Primobolan.

The SI.com report also indicated, citing three Major League players, that Rodriguez was tipped by MLBPA Chief Operating Officer Gene Orza in early Sept. 2004 that he would be tested later that month. Rodriguez declined to respond to SI when asked about the warning Orza provided him.