At the start of 2006, I was challenged to come up with a formula that ranks all major league players. After bouncing ideas off the Elias Sports Bureau, MIT and others over the last year, I eventually wrote the formulas that produced the ESPN Player Ratings. What's unique about the ESPN Player Ratings is that they put all types of players' performances (batters, starting pitchers, relievers) into the context of where they rank in the major leagues. The ratings do not discriminate or favor a certain type of player. Sluggers, top-of-the-order hitters, starters, closers and set up men all earn points that contribute to their rating based on where they rank against their peers.
Because it is based on major league rankings in several categories, there could be significant movement in the ratings each day.
The ratings also function as an awards predictor about as well as any statistical formula created.
The 21st best player in the game... today... but maybe not tomorrow. Thank God ESPN provides us with such vital information.