In his first start of the spring last Sunday, Corbin threw a pair of shutout innings.
"He spots his ball well," D-backs manager Kirk Gibson said. "His slider is really a good pitch for him this year. He keeps his composure and continues to make good pitches to get out of it."
Corbin appeared in 22 games for the D-backs last year and was 6-8 with a 4.54 ERA.