To be fair, Rickey didn't develop that power until he had been in the majors a few years. His last two years in the minors he hit 3 HR in 889 PA's between AA and AAA, plus another 1 in 398 MLB PAs. His best power year in the minors he only had 33 XBH (a total that Hamilton has eclipsed this year). He failed to crack double digits in HR in four of his first five years in the majors, and didn't break the 450 SLG barrier until his sixth year in the bigs.