I noticed that Luis Aparicio led the AL in stolen bases in each of his first NINE seasons (wow). Has any other player led his league in a major category for his first 9 or more seasons? I doubt it.
Ripken, for example wouldn't count for Games Played since he only played 23 games in 1980, plus several of the seasons during his streak, his team only played 161 games, so he didn't actually lead the league.
The closest I could find is Ralph Kiner who led the NL in homers each of his first SEVEN seasons (again, wow).
Most Underrated:Al Simmons, Keith Hernandez, Carlos Beltran
Most Overrated: Kirby Puckett, Catfish Hunter, Jack Morris
Most Overrated for being "Underrated": Bobby Grich, Gene Tenace, Alan Trammell
Most Underrated for being "Overrated": Roberto Clemente, Derek Jeter, Cal Ripken Jr.