That's a good point, and I agree. -1 for a K. I also think that a batter should get -2 for grounding into a double play. There's no reason why only pitchers should be penalized - batters should, too.

If in a game A-Rod were to strike out 3 times and also GIDP, that trillionaire deserves -5 for the day. :p

I was gonna mention also -1 for committing errors, but that's not something that happens in a batter's box anyway, so I think we shouldn't get into fielding stats.... even for pitchers.