The purpose of this study was to determine whether major league baseball players 
live lontger than the general public. Ages of death of major league baseball 
players who debuted between 1900 and 1950 were obtained, and differences between 
ages of death and age-adjusted life expectancies were determined by analysis of 
variance and t-tests, taking into account player position. Correlational 
analysis also was conducted to determine if career length affected longevity. 
Baseball players lived an average of four years longer than age-matched controls 
from the general public. Career length did not affect longevity among players. 
We concluded that professional athletes, as represented by major league baseball 
players, have increased life expectancies. This increase cannot be explained by 
increased fitness associated with working as a professionral athlete, but is 
likely the result of an initial selection process for becoming a professional 
athlete.