To pick four players from the history of baseball is nearly impossible.
To even start, you would have to define the list. In baseball, the difference between position players and pitchers is enormous.
When Curt Schilling started Game Six of the 2004 ALCS and beat the Yankees, was there a better baseball player than him on that day?
Probably not, but that does not mean I am going to carve his face into a mountain.
Babe Ruth might be the greatest baseball player ever, but he played in a different era. Barry Bonds might be the greatest player ever, but he (might have) cheated.
So this is my Mount Rushmore of Baseball: