C-word

Oh man. To have a curveball like that is any pitcher's dream.
As for Sean Casey, he looks like he was more fooled by the pitch choice than by how good the curve was. He must have been thinking fastball or changeup, and then assumed it was coming for his face. One set of buckled knees later, and Kershaw looks like a Cy Young quality pitcher. There's plenty of pitchers out there with this quality curve; Buerhle being the only guy I can think of off the top of my head.