Gray is scheduled to pitch in Wednesday's Cactus League opener against Arizona, the Denver Post reports.
After tossing 155 innings between Triple-A and the big leagues last season, Gray should be able to push into the 190-200 range if he stays healthy in 2016. The Rockies may turn to veteran Jorge De La Rosa as their Opening Day starter in April, but Gray should have a strong hold on a rotation spot to begin 2016. Utilizing Gray this season will almost certainly require a format that allows owners to bench the young right-hander for his home starts at Coors Field.