> In trying to use the Trackjack's player expectation
> column, I'm trying to understand what's up with RSO (=
> Rider Splits Optional), which is said to add a .2%
> advantage. I found a discussion on another forum where
> someone explained

Adding 0.2% e.v. to a game doesn't mean that the game has +0.2 e.v.! It means that the (negative) e.v. of the game is improved by 0.2%.

Am I misunderstanding your question?

Don