Belfiore was a closer during his college career, but the Diamondbacks moved him into the rotation after signing him for $725,000 as a sandwich pick in 2009. He had proven himself suited for the role with 9.2 innings of scoreless relief in Boston College's epic NCAA regional game against Texas, which it finally lost 3-2 in 25 innings. He made a strong first impression by dominating Rookie-level hitters after signing, but he wasn't as effective in low Class A in 2010. Belfiore is still learning how to be a starting pitcher, and showed some positive signs in the second half of the season when his velocity increased a few ticks to 92-93 mph. He throws a slider and a changeup in the low 80s. His major league-average changeup is regarded as his best pitch and could get better since he really didn't start using it until he joined the pro ranks. He throws with an easy arm action, and his average command could grade as plus in the future, but he doesn't have swing-and-miss stuff. Belfiore has a No.4 starter's upside, but he does look like he'll have the stuff and stamina to remain in the rotation. On scout sees him as a late bloomer who will come on later in his career, similar to former big leaguer Jeff Fassero. --

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