Marc Hulet of FanGraphs is on my favorite prospect evaluators in the baseball blogosphere. He sees a lot of games, gives really detailed scouting reports from his firsthand game accounts, and has a strong statistical knowledge to tie tools and mechanics to future Major League projections. He released his 2013 "Minor Review" report on the Yankee farm system and it's definitely worth checking out if you're a big time prospect hugger.
Highlights include Hulet naming High-A C/3B Peter O'Brien the "riser" of 2013 and Double-A OF Tyler Austin the "tumbler." He praised 2013 2nd round pick 2B Gosuke Katoh for his plate discipline and "advanced bat," and pegged Low-A Charleston 1B Greg Bird the organization's sleeper. That's a label being put on Bird by many despite his outstanding season at the plate, and it's one I agree with. I was a little surprised to see Hulet so down on Austin though. I was willing to give him more of a pass on his down year because of the injury problems and the negative park factor effects of hitting in Trenton's stadium. Check out the whole article and more of Hulet's evaluations here.