I'm not fooled by Marquis and his ERA either. On the other hand, I'm not fooled by Bush's last start. The glaring difference is that Bush's current ERA is well above his career ERA, while the opposite is true of Marquis. I don't expect Bush to give up 1 run in 7 IP every time, but I don't expect his ERA to be above 5.0 by the end of the year either. He has a career 4.46 ERA, with almost half his IPs coming in the very difficult AL East. I hope they play angry and are over aggressive at the plate and make, silly, aggressive base running errors. Sounds good to me.