There is a little-known and underused statistic in baseball called “Run Production (RP)” which is the numerator in this statistic I created. Run production accounts for all of the runs a player has scored and the number of runs a player has batted-in (minus the number of home runs, which is duplicitous, as it adds a run and an RBI for the batter). This stat, in my opinion, is most insightful on a player’s “net worth.” I took this run generation and divided by the number of plate appearances (not the number of at-bats), and called it the “Total Run Production Index” or “TRP,” pronounced “trip.”

In reality, the TRP is the likelihood a run will score every time a player comes to the plate. For example, if a player has a TRP of 1.000, that player averages an RBI or a run-scored (or a solo home run) every plate appearance; if a player has a TRP of .500, there is a 50% chance that he will knock in a run or come around to score each time he comes to the plate.