Diamondbacks righty Shelby Miller has been cleared of any new damage to his surgically replaced ulnar collateral ligament, Jack Magruder of The Sports Xchange reports on Twitter. That’s the news the club was hoping for when it sent Miller’s MRI results to surgeon Neal ElAttrache.

Miller, 27, has only made four starts since working back from Tommy John surgery. The alarm bells went off recently when he was forced out of his most recent outing with elbow tightness, though it emerged thereafter that there was cause for optimism.

It’s anyone’s guess how much time Miller will miss, but Magruder notes that the veteran right-hander will remain on ice for at least another seven days. At this point, he has only been down for a week, but his ultimate rehab timeline will surely depend upon how his elbow responds to the rest and how quickly he’s able to resume throwing.

While Miller was tagged for 19 earned runs in his first 15 innings on the year, he also ran up 19 strikeouts and was pumping mid-nineties heaters. Despite the struggles, then, the organization would surely like for him to be working out the kinks in major-league games. After all, the D-Backs will need to maximize all their resources for the stretch run in a tough NL West.

It seems Miller will be replaced by Clay Buchholz, reversing the DL/rotation swap those two hurlers made in late June. While the Snakes would surely prefer to have both at full health, the tag-team approach is at least keeping the rotation filled out so far.