Kieboom (oblique) was placed on the injured list Tuesday at Triple-A Rochester, Mark Zuckerman of MASNSports.com reports.
Kieboom is headed for an MRI after tweaking his left oblique in a recent game versus the Triple-A affiliate of the Yankees. The 25-year-old former top prospect has also missed time this season with shoulder and lat problems. He sat out all of 2022 due to Tommy John elbow surgery.