Nelson will remain in the Arizona rotation moving forward with the Diamondbacks electing to move Jordan Montgomery to the bullpen, John Gambadoro of Arizona Sports 98.7 FM reports.
Arizona is going back to a standard five-man rotation and will shift the struggling veteran Montgomery to relief rather than Nelson, who has posted a 2.73 ERA and 55:11 K:BB over 56 innings since the beginning of July. Nelson will start Friday's series opener in Boston.