The difference between the old ballplayer and the new ballplayer is the jersey. The old ballplayer cared about the name on the front. The new ballplayer cares about the name on the back.
The average person puts only 25% of his energy and ability into his work. The world takes off its hat to those who put in more than 50% of their capacity and stands on its head for those few and far between souls who devote 100%.