Mets reliever Dario Alvarez (groin) will rejoin the Mets on Wednesday, per Mike Vorkunov of NJ.com.
Alvarez, who hasn't been able to pitch since Sept. 15, was thought to be done for the season with a groin injury. However a successful rehab stint with High-A Port St. Lucie seemed to change minds as the playoff-bound team is desperate for a lefty arm out of the bullpen.
It's unclear how many innings he will throw with the season nearing an end considering New York will want to preserve his health for the playoffs.