Norberto hit the wall as a starting pitcher in low Class in 2007-08, but found more success after moving to the bullpen in July of the latter season. Last year, his first as a full-time reliever, he had mixed results, impressing in the hitter-friendly California League but scuffling after a promotion to Double-A. Norberto has good velocity for a lefthander, with a fastball that ranges from 89-95 mph and usually settles in around 92. It features late, sinking life. He's still searching for a reliable second pitch. His hard curveball is a fringe-average pitch, and he has mostly scrapped the changeup he used as a starter. He's still more thrower than pitcher and hasn't learned to control the strike zone. The Diamondbacks like Norberto's pure arm strength and competitiveness, and they think he can make a difference in their big league bullpen in the near future. Scouts compare him to a smaller version of J.C. Romero.
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