Originally Posted by BadFundamentals
As noted in your link:
Runs created is believed to be an accurate measure of an individual's offensive contribution because, when used on whole teams, the formula normally closely approximates how many runs the team actually scores. Even the basic version of runs created usually predicts a team's run total within approximately 20 runs.2 Other, more advanced versions are even more accurate.
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Just because it is accurate on "whole teams" doesn't mean you can take it down a level and apply it to players and expect it to sustain accuracy at PLAYER level. That is my problem with it. Some players it will overstate others it will understate. Those offset one another on team but not for individual player.
I'm fine with it at team, game etc.. etc.. level - groups of players but not applied to just one player. There are far too many variables at player level which can go addressed or not be adequately addressed.
You can take it to a player level BF. I understand your doubts for using it on team statistics and the jump to players, but Extrapolated runs (XR) is another similar stat that on a team stat basis gives similar correlation with Runs scored as RC does. Xr, or other types like Palmers I believe, is linear, so each players contribution adds to the teams Xr. So you might then say, well it doesn't work on a micro basis. But if you look at all of 2003 and 2004 games logs, you can see the Xr and similar stats perform fairly well with a correlation coefficient of around 0.85 or so to runs scored for each game in those seasons. So, in summary, it does measure player contribution, and does a heck of alot better than rbi's and the like.