Weighted On Base Average(woBA), Weighted Runs Above Average (wRAA) and Weighed Runs Created (wRC) are all based on linear weights. Based on thousands of games of data, it has been determined that the average single is worth .48 runs, the average double is worth .78 runs, triple 1.04, homer 1.40, walk 0.31, etc. Based on those values, wRAA is a player's runs produced above average.
wOBA is the rate statistic version of wRAA. It is like OPS but it uses the weights given above. The reason why it's called wOBA is because it has the same scale as OBA or OBP. So, if you see a player with a .380 wOBA, you know he is really good. If you see a .280 wOBA, you know the player is really bad.
wRC is Weighted Runs Created. It is also based on the same weights given above. instead of being runs above average, it is total runs the player contributed. 100 wRC is very good.
__________________
Lee Panas
detroittigertales.com
"Baseball is the highest form of human activity. It should be analyzed"
--George Lindsey
Last edited by tiger337; 06-25-2009 at 11:43 AM.
|