According to Selena Roberts and David Epstein of Sports Illustrated, "Alex Rodriguez tested positive for two anabolic steroids" in 2003. Rodriguez did not comment, but Roberts and Epstein say they confirmed his alleged steroid use with four independent sources. Rodriguez was reportedly one of 104 players to test positive for PEDs in 2003.
However, steroid use doesn’t impact A-Rod’s contract.
"Two sources familiar with Rodriguez’s contract told SI there is no language about steroids in the contract that would put Rodriguez at risk of losing money."