Robertson signed a one-year, $10 million contract with the Mets on Thursday, Jeff Passan of ESPN.com reports.
Robertson missed the entirety of 2020 and the majority of the 2021 season due to Tommy John surgery. However, he returned to good health in 2022 with 63.2 innings and tallied 20 saves while splitting the season between the Cubs and Phillies. He won't be in line for save opportunities with the Mets barring an injury to Edwin Diaz, though Robertson will be a proven setup option in a bullpen that is otherwise lacking high-leverage relievers.