PBR - Through the previous regression analysis [click here to view the article] with wins as the dependent variable we now know WHIP, OPS, and Run Differential all have a strong relationship to success. Using these three metrics, it is my belief that a mathematical formula can be constructed to definitively determine the best club in baseball history.

Winning percentage is found by dividing the games a club has won by the total number of games played. For example, say Team A won 90 games in 1928 (140-game schedule) and Team B won 92 games in 1955 (154-game schedule.) Looking purely at the win total, some fans may say Team B was a better club, but is that true? If you divide 90 wins by 140 you get a winning percentage of ..643 - if you divide 92 by 154 you have a .597 winning percentage. These examples demonstrate why when comparing clubs across eras that more wins does not necessarily mean a better club.

The model: (.503+(OPS*.097)+(RDiff*.006)+(WHIP*-.053).
The result of the equation, which I'll call a Greatness Number, is a number similar to winning percentage and a figure that normalizes teams across eras by focusing specifically on skills (OPS, WHIP, RDiff) and not simply wins. Once you run the equation you can take the results and fairly compare clubs across eras.

The relationship between the Greatness Number and winning percentage is 94.6% (per a correlation analysis).
Over the next few days I'll unveil more details from my analysis of over 2,300 clubs, specifically information related to Philadelphia teams.
In the meantime, the 1939 Yankees carry the crown of the greatest baseball team to ever have played the game..
If we treated the Greatness Number as a winning percentage and assumed the '39 Yankees and '27 Yankees played similar 162-game seasons we can predict the '39 Yanks would finish ahead of the '27 Yanks by two games.
Formula: (GN*162)-162)
For the '39 Yankees: (.765*162)-162 = 124 wins and 38 losses.
For the '27 Yankees: (.750*162)-162 = 122 wins and 40 losses.
In the meantime, the 1939 Yankees carry the crown of the greatest baseball team to ever have played the game..
If we treated the Greatness Number as a winning percentage and assumed the '39 Yankees and '27 Yankees played similar 162-game seasons we can predict the '39 Yanks would finish ahead of the '27 Yanks by two games.
Formula: (GN*162)-162)
For the '39 Yankees: (.765*162)-162 = 124 wins and 38 losses.
For the '27 Yankees: (.750*162)-162 = 122 wins and 40 losses.
- Patrick Gordon is the editor of the Philadelphia Baseball Review. Contact him at pgordon@philadelphiabaseballreview.com or @Philabaseball on Twitter.