Originally Posted by dougdirt
How are you so sure? How does these "pitch movement" numbers get determined and who or what determine them? How can we be so sure that they make every variable in baseball so cut and dry. How can this one stat, that says Leake's "sink" has dramatically worsened, be so accurate that we can discount what scouts and our own eyes see?
I've always been leery of these these types of stats but am willing to learn them and form my own opinion of them.