[LaGrone]

Hard to believe Bonds, Sosa, and McGuire bulked up that quickly with weights. My gut instincts tell me performance enhanced drugs, just like most NFL players. The testing systems are getting better and are able to catch more players now.

[Tallguy]

People tend to forget that McGwire was a pretty big dude as a rookie. Bonds & Sosa were skinny. It's possible for a big body to get a lot out of weight training without resorting to 'enhancers'. OTOH, skinny guys can't train to the same level without some help.

None of this proves anything, of course. But it is suggestive.