Originally posted by: kranky
Tony Conigliaro, Boston Red Sox.
Tony C was the youngest home run champ in AL history (age 20) and was the youngest player to hit 100 career homers (age 22). Projecting his HR per At-bat numbers until his late 30's would indicate a total of between 500-600 career home runs.
In his third season, he was hit in the face by a pitch and missed the rest of the season plus all of the next year. He was never the same and played only 2 1/2 more seasons before his career ended after two comebacks.