Help Me Build a Steroid All-Stars Team!!

I was sitting at home the other day reading through more of this Roger Clemens drama when suddenly it occurred to me....Wouldn't it be interesting to make an All-Star team comprised of only players we know have taken steroids, and those that we all but know have taken them? case in point, Roger Clemens)

So here's what I'm asking from all of you: Give me the best steroid user you can find for each position (ex. pitcher- Roger Clemens), but then, give me the best non steroid user counterpart that you can think of (past or present). My goal is to collect 2 starting rosters. Team Steroid, and Team Natural so to speak. After I receive all the suggestions from all of you I will post the 2 teams rosters and then we can debate (if you choose) which of the 2 teams is the superior one. Remember, I need suggestions for all positions. Please look at what others have posted so we can try to avoid duplicates.