Clay Buchholz had a shaky first minor-league rehab start Saturday at Triple-A, allowing three runs in 4.2 innings, and today the Red Sox announced that he’ll make at least one more start in the minors before coming off the disabled list.

Alex Speier of WEEI.com reports that the Red Sox want him stretched out to at least 90 pitches before returning from a knee injury that’s sidelined him since late May.