Nelson was named the Diamondbacks' No. 5 starter Sunday, Nick Piecoro of The Arizona Republic reports.

EDGE Analysis

The 25-year-old surrendered 12 runs with a 13:8 K:BB across 14.1 innings during spring training but still won the rotation spot over Drey Jameson. Nelson was impressive in his first taste of the big leagues last season with a 1.47 ERA, 0.82 WHIP in 18.1 frames and clearly has upside, but he could be a risky bet for fantasy managers requiring immediate production.