Reed experienced soreness in his oblique during a bullpen session Tuesday and has been shut down from throwing, Anthony DiComo of MLB.com reports.
Reed has no official timeline for his return and isn't expected to throw again until the soreness subsides. The 29-year-old had an outside chance of securing a spot in the Mets' bullpen for Opening Day, but the injury likely means he'll begin the 2022 campaign in the minors.