Jake Arrieta

After a sensational 2006, Arrieta has cooled off this spring. He tied for the NCAA Division I lead with 14 wins at Texas Christian after transferring from Weatherford (Texas) Junior College, and encored by going 4-0, 0.27 with Team USA last summer. But instead of dominating the weak Mountain West Conference this spring, he has been inconsistent. He showed a 91-94 mph fastball with life and a hard slider a year ago, but this spring he has lost velocity and life. His fastball has been 88-91 mph and straight, and though he's 6-foot-4 and 225 pounds, his drop-and-drive delivery means his heater comes in on a flat plane. Arrieta has struggled to repeat his mechanics, which has led to command difficulties. He hasn't used his changeup much, though it should become a decent third pitch. If Arrieta can turn himself around, he could be a steal in the supplemental first round after projecting at one point as a possible top-10 pick. But he's also represented by Scott Boras, and if he's looking for more than slot money, he could slide.