Well ERA is a terrible way to judge a pitcher over a partial season so it basically is nothing. If you look at peripherals they were just about the same guy last year with Marshall being just a tiny bit better. Of course Marshall is a 25 year old rookie who has shown flashes of much better skills and Marquis is a 29 year old who probably won't get any better. All I was saying is that Marshall has shown, in one half of a season, that he can be a little better than league average. For a 4th or 5th starter, that's a good thing. Also, I would not say ERA is terrible...it's maybe not good...there are much better stats...but it isn't terrible. Anycrap, Marshall has value. So does the other Sean, and if we weren't short on quality starting pitchers and SS's, this would be an OK trade. Since we are both of those things, and we have DeRosa, some people think we're giving up too much.