(NOTE FROM JOHN): I'm promoting this Fan Post from Woo! to the Front Page because it is extremely interesting. I will be doing a lot more of this in 2011, especially anything that has video with it.)
Not sure if anybody is interested, but Tim Williams has some video of Luis Heredia's recent outing in Pirates Spring Training, minor league version. For those of you who aren't familiar with him, Tim is probably the best source of information to go to in regards to Pirates minor leagues and draft signings. He breaks down Heredia's outing, as well as provides video.
Also seen at the site are Jameson Taillon, Tim Alderson, and Stetson Allie.
(Additional Note from John: I gave Heredia a Grade B- in the book. He reportedly was throwing 88-93 MPH last summer when the Pirates signed him, so it is interesting to see that his velocity has already increased from that baseline).