I play the Yahoo Salary Cap Football every year and love it. Here is the link if you've never played it:
http://football.fantasysports.yahoo.com/salcap
Now, if you put that link in and change out football with baseball, it goes to a page that isn't an error message and has fantasy baseball all over it. This doesn't seem that huge, but wait, if you put in hockey or basketball, it has an error page. You guys think they're gonna have salary cap baseball?