The MLB Rookie of the Year award can be somewhat hit or miss.
Sometimes the phenoms of a given baseball season are the real deal. They go on to have long careers full of glory and accolades. They live up to their potential.
And sometimes they are flashes in the proverbial pan. Sometimes they can't sustain their momentum, or the league catches up with them, and they burn out instead of fading away.
But in terms of ranking the greatest seasons in the history of the NL Rookie of the Year award, one type of season is not greater than another.
The members of this list have sometimes gone on to continued greatness—and sometimes have not. Some can be found immortalized in the Hall of Fame, and some will be forgotten much more quickly.
But for one year, during their rookie seasons, these players were among the best in the game. They impacted baseball in major ways and changed the game, regardless of lasting impact.