Obviously everyone who will be mentioned in this thread will be linked to steroids, but lets see how many guys we can name that had Monster years DURING their career and never came close to those numbers.
Richard Hidalgo 2000: .314 44 122 with 13 steals (career .269 hitter with under 200 career bombs)
Brady Anderson (DUH) 1996: .297 50 110 with 21 steals (career .256 hitter with 210 homers in 14 years)
Fernando Tatis (1999) .298 34 107 with 21 steals (career .262 hitter with under 100 bombs)
Pat Hentgen 1996: 20-10 3.22 ERA with 177 K's (not really belonging on this list as he was a decent pitcher but 96 was amazing for him)
Wanted to add Ellis burks for his mammoth 1996 season but i was astounded to find he was remarkably good throughout career with many great seasons. look up his stats you will be shocked