Luis Robert: Everything you need to know

Robert was administered a series of injections for his injured back, Andrew Tredinnick of The Bergen Record reports. Out since late April with a lumbar spine disc herniation, Robert has yet to resume baseball activities, but the hope is the injections will speed his recovery along. Robert is on the 60-day injured list and not eligible to return until late June. A timetable for his activation won't be available until he starts ramping up his activities and goes out on a rehab assignment. A.J. Ewing has taken over as the Mets' primary center fielder in Robert's stead.

The Mets transferred Robert (spine) from the 10-day injured list to the 60-day IL on Tuesday. Robert landed on the 10-day IL on April 30 due to lumbar spine disc herniation and has yet to resume baseball activities while he continues to deal with lingering symptoms of the injury. While surgery isn't on the table for Robert at this point, the 28-year-old has received consultation from outside doctors regarding a treatment plan for his symptoms, per MLB.com. Robert remains without an official timeline for a return, though his move to the 60-day IL ensures that he won't be an option for the Mets until at least late June.

Mets manger Carlos Mendoza said Tuesday that Robert (back) is still experiencing lingering symptoms and "is not progressing the way we would like," Anthony DiComo of MLB.com reports. The decision to call up A.J. Ewing earlier Tuesday was no doubt related to Robert's slow recovery from a lumbar spine disc herniation. Robert has not been cleared to resume baseball activities and appears ticketed for an extended absence. In the meantime, Ewing will get an opportunity to nail down the center-field job for the Mets.