Mark McClusky on Baseball Prospectus looks at the numbers for I-Rod, Palmeiro, and Juan Gone, and says there’s nothing in the numbers to suggest that they were juicing. To be more specific, there’s nothing that says they took something that caused their performance to be out of the ordinary - since, as McClusky points out, there are no studies that show the link between offensive performance and steroids. McClusky’s wise words on the matter:
First, players are innocent until proven guilty. Secondly, for good or ill, steroids weren’t against the rules of Major League Baseball during Canseco’s career. And perhaps most importantly, there isn’t any study out there that proves that steroids help players produce more offensively. That doesn’t mean that steroids don’t help; that means that we don’t know that they do.