Bagwell had a spike in production as well. His first 3 seasons, he posted HR totals of 15, 18, 20...then he jumps to 39, is hurt one year and has 21, then jumps back to 31, 43, 34, ... now, the jumps do coincide with his prime years, but so does Sosa's jump. So other than a corked bat, what points to Sosa that doesn't point to Bagwell. If you start pointing to body types and physical developments, those same things occurred with Bagwell too.