The average player is bigger now than at the height of the steroid era, yet scoring and homers are down, so it is quite clear that bigger stronger players are/were not the reason for power spikes. Scoring and home runs were on the decline long BEFORE steroid testing began in 2005. Steroids were most rampant from 2001-2004, yet scoring peaked in 2000 and was rapidly declining when steroids were being used more than ever. It is very tough to square those facts up with a belief that steroids were responsible for increased power. The facts show no correlation between rates of steroid use and increased home runs or scoring. The strongest steroids were in use in the 80's and early 90's long before scoring and home runs climbed to record levels. As has been said, there are better reasons for the power binge than steroids. Once you look a little deeper it becomes obvious.