Originally Posted by 757690
One thing to note is that these runs expectancy charts are based on data from the the heart of the steroid era, 1999-2002. I have to imagine that those values would be different if based on the current run scoring environment.
Has there been any RE charts based on newer data?
True, the chart RedsManRick posted is ten years old, but it still proves the concept we were discussing. The run expectancies change a little bit each year because after all the data is derived from real baseball games and every game is different.
You can go to Baseball Prospectus to see the Run Expectancy charts for any year you like: http://www.baseballprospectus.com/so...hp?cid=1091223
It can be wise to use a chart that combines data from a few years because data from a single season can have too small of a sample size for some events (for example, how many times per season does someone hit a triple with men on 1st and 3rd with 0 outs?). Here is a larger matrix from Tango's site: http://www.tangotiger.net/re24.html
Here is a good chart that gives the linear weight for each hit type or event type cross-referenced with the base/out state: http://www.tangotiger.net/RE9902event.html
It is a bit old but you can find a newer one if you look around.