It should even out, but I don't think it does for everyone. I watched A-Rod make 3 errors in a game when he was with Texas and they were playing against San Diego. I don't think the official scorer charged him for any. If he did, it was only one. I recall being quite peeved about it. Each official scorer of a ballgame has their own identity and form their own opinions about each play. Some will likely be homers that give their own players the benefit of the doubt. Some will likely show favortism to marquis (sp?) players. But, for the most part, I agree that it will even out. And while it's not all that fair for a pitcher to be charged for runs after an error, there are also plays that bail out the pitcher. Like outfield assists. The pitcher gave up a lead off double, but the outfielder nailed the runner trying to take the extra base. There are a bunch of those plays, so the pitcher's ERA also reflects those. Marquis is nobody's favorite player.