PITTSBURGH -- Shelby Miller's long road back from Tommy John surgery will add a chapter Monday when he is activated off the 60-day disabled list to start against the Marlins in Miami.
Miller, who underwent surgery last May, joined the D-backs in Pittsburgh on Thursday, but will not be added to the roster until Monday.
In the meantime, the team demoted Matt Koch, whose place in the rotation Miller will be taking, and recalled right-handed reliever Jake Barrett to give the D-backs an extra bullpen arm for the four-game series with the Pirates.