Rating computer players

In my game I need to rate the computer players.As global values I have named them player1, player2, player3, etc etc,.
As global strings I have given them names Greg, Marcia, Peter, etc etc.
What I need to do is rate the players by points in the game. Assign the names to the players, and then use the strings to display as to the order the players are doing in the game.

Also I want to rate the human players that play the game, and the best ones be displayed from game to game on a Hall of Fame Board. How can I do this?