Offense Ratio correlates very well with runs per game when calculated
for teams and leagues, and therefore is an accurate
indicator of the theoretical run production of an individual player.
Using the correlation between OR and runs per game (RPG) derived from combined
league statistics (TB, BB, AB, and H) over time, the theoretical RPG for
an individual player can be calculated from his OR. This would be
the runs per game that a nine man lineup consisting of just that player
would score in the course of an average game.
Imagine being able to send Ted Williams to the plate over and over again
for an entire game. Williams' career OR was 1.366. A team with this
OR would score an average of 10.8 runs per game. By analogy, a lineup
consisting of Williams alone would theoretically score 10.8 runs per game.
A box in the upper right hand corner of the chart shows the relationship
between OR and RPG.
Each curve on the Offense Ratio Diagram consists of all the points for
which the combination of batting average and power average (total bases
plus walks per hit) gives the same OR. The offense ratio that each curve
represents is shown at the top of the curve.
Follow the links below for a more in depth discussion.