1986 - The Evolution of Barry Bonds - TIME
It's pretty obvious something was going on once you pass 1997. Enter the new century and the "hitting the gym" idea pretty much crumbles.
BALCO didn't get seriously involved with athletes until 1996.
Of course, that they were located in King Roid's backyard is strictly a co-inky-dence.
Too bad TIME couldn't include "hat size" in the stats they listed.