Reynolds was recalled from Triple-A Las Vegas on Friday.
The Mets placed both Matt Harvey and Juan Lagares on the DL on Friday, freeing up a pair of spots on the 25-man roster. Those will be filled by Reynolds and Brandon Nimmo, who will also come up from Las Vegas. Reynolds struggled with the Mets earlier this season, going just 4-for-22 at the plate with one home run and one RBI.