Originally Posted by duncan_idaho
It doesn't penalize the player. It just prevents counting the same run twice.
When you start combining counting statistics, you have to account for duplication like that.
You want to talk about runs knocked in, sure, you count the HR as an RBI.
You want to talk about runs scored, same thing.
When you want to talk about the runs that Player A contributed to his team in a given period compared to the runs that Player B contributed, though... Player A's home runs still only accounted for one run. Giving him credit for them in R and RBI (without subtracting the HR count from the total) makes it look like Player A contributed (number equal to home runs) more runs than he actually did.
Sure it does. If Mike Trout gets a double and Albert Pujols hits a singe and Trout scores, they each get credit for a run produced. How is that worth twice as much as a run produced by a home run?
This just proves my point that when you try to make statistics too complex, they lose their validity. And regarding WAR, I'm glad you mentioned that Fangraphs and Baseball America can't even manage to agree how WAR should be calculated. That's another thing about WAR that has always made me question its usefulness.