Originally Posted by dougdirt
Vada Pinson did it age 20. Bobby Tolan did it in his first full season, but he has mutliple partial seasons before then. Eric Davis did it in his first full season, but had two partial seasons before that.
Bobby Tolan had two seasons with St. Louis (1967 and 1968) in which he had nearly 300 PA's and played in over half of the Cardinals' games before he went 20/20 with the Reds. I would not consider 1969 as his first full season.