I'm really interested in finding some more advanced statistics for football. Pretty much the only place I've found is Football Outsiders. I know about Defense-Adjusted Value Over Average (DVOA) and Defense-Adjusted Yards Above Replacement (DYAR), but I'm looking for something more along the lines of Win Shares like in baseball. Does anyone know anywhere that has something like this? I realize football is a team sport so it can be much harder to isolate performance, but just wondering if anyone knows anywhere were people are doing this kind of statistical research. Thanks?